diff --git a/.maintain/rename-crates-for-2.0.sh b/.maintain/rename-crates-for-2.0.sh
old mode 100644
new mode 100755
diff --git a/Cargo.lock b/Cargo.lock
index 6ec22258303cb..b2bf3f6265e18 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -138,21 +138,11 @@ name = "assert_matches"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "async-macros"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "async-std"
-version = "1.2.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "async-macros 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "async-task 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "broadcaster 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-channel 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -162,7 +152,7 @@ dependencies = [
  "futures-io 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kv-log-macro 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -259,7 +249,7 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -275,7 +265,7 @@ dependencies = [
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fxhash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -378,17 +368,17 @@ dependencies = [
  "console_log 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb-web 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-chain-spec 2.0.0",
  "sc-network 0.8.0",
  "sc-service 0.8.0",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-futures 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -409,7 +399,7 @@ dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-automata 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -422,7 +412,7 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
-version = "3.1.1"
+version = "3.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -479,8 +469,8 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -533,7 +523,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -591,7 +581,7 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -599,8 +589,8 @@ name = "console_log"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -658,8 +648,8 @@ dependencies = [
  "cranelift-codegen-meta 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-codegen-shared 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-entity 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "target-lexicon 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "thiserror 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -684,7 +674,7 @@ name = "cranelift-entity"
 version = "0.50.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -693,7 +683,7 @@ version = "0.50.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cranelift-codegen 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "target-lexicon 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -716,8 +706,8 @@ dependencies = [
  "cranelift-codegen 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-entity 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-frontend 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "thiserror 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmparser 0.39.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -749,8 +739,8 @@ dependencies = [
  "rand_xoshiro 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon-core 1.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "tinytemplate 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -773,8 +763,8 @@ dependencies = [
  "rand_os 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_xoshiro 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "tinytemplate 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -887,7 +877,7 @@ dependencies = [
  "csv-core 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1069,7 +1059,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1081,7 +1071,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1096,7 +1086,7 @@ name = "erased-serde"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1128,7 +1118,7 @@ dependencies = [
  "evm-runtime 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "primitive-types 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha3 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1176,7 +1166,7 @@ dependencies = [
  "anyhow 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "goblin 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "scroll 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "string-interner 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "target-lexicon 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1227,7 +1217,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1237,7 +1227,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1309,7 +1299,7 @@ dependencies = [
  "pallet-indices 2.0.0",
  "pallet-transaction-payment 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -1321,7 +1311,7 @@ name = "frame-metadata"
 version = "10.0.0"
 dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-std 2.0.0",
 ]
@@ -1335,12 +1325,12 @@ dependencies = [
  "frame-support-procedural 2.0.0",
  "frame-system 2.0.0",
  "impl-trait-for-tuples 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "once_cell 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-arithmetic 2.0.0",
  "sp-core 2.0.0",
  "sp-inherents 2.0.0",
@@ -1388,7 +1378,7 @@ dependencies = [
  "frame-support 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-inherents 2.0.0",
  "sp-io 2.0.0",
@@ -1405,7 +1395,7 @@ dependencies = [
  "frame-support 2.0.0",
  "impl-trait-for-tuples 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-externalities 0.8.0",
  "sp-io 2.0.0",
@@ -1667,7 +1657,7 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1700,7 +1690,7 @@ dependencies = [
  "aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "bstr 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1709,7 +1699,7 @@ name = "goblin"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "plain 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "scroll 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1718,16 +1708,16 @@ dependencies = [
 name = "grafana-data-source"
 version = "0.8.0"
 dependencies = [
- "async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "async-std 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1753,7 +1743,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "string 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1771,7 +1761,7 @@ dependencies = [
  "futures-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-util 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1823,7 +1813,7 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.3"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1955,7 +1945,7 @@ dependencies = [
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1984,7 +1974,7 @@ dependencies = [
  "http-body 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2061,7 +2051,7 @@ name = "impl-serde"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2125,15 +2115,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getrandom 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "js-sys"
-version = "0.3.34"
+version = "0.3.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2147,8 +2137,8 @@ dependencies = [
  "hyper-tls 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-pubsub 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2161,9 +2151,9 @@ version = "14.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2194,7 +2184,7 @@ dependencies = [
  "hyper 0.12.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-server-utils 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2206,9 +2196,9 @@ version = "14.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2220,7 +2210,7 @@ dependencies = [
  "globset 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2233,7 +2223,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-server-utils 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2268,7 +2258,7 @@ name = "kv-log-macro"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2299,7 +2289,7 @@ dependencies = [
  "fs-swap 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "interleaved-ordered 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-util-mem 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2315,14 +2305,14 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb-memorydb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-util-mem 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "send_wrapper 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2406,7 +2396,7 @@ dependencies = [
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "multistream-select 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multihash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2451,7 +2441,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2481,7 +2471,7 @@ dependencies = [
  "futures_codec 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-swarm 0.4.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2502,7 +2492,7 @@ dependencies = [
  "futures_codec 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-swarm 0.4.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multihash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2520,7 +2510,7 @@ name = "libp2p-mdns"
 version = "0.14.0-alpha.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "async-std 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "data-encoding 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "dns-parser 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2528,7 +2518,7 @@ dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-swarm 0.4.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2547,7 +2537,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures_codec 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unsigned-varint 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2562,7 +2552,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2580,7 +2570,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-swarm 0.4.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2596,7 +2586,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures_codec 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rw-stream-sink 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unsigned-varint 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2612,10 +2602,10 @@ dependencies = [
  "ctr 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-send-wrapper 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "quicksink 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2626,9 +2616,9 @@ dependencies = [
  "static_assertions 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "twofish 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-futures 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2648,14 +2638,14 @@ name = "libp2p-tcp"
 version = "0.14.0-alpha.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "async-std 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "get_if_addrs 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipnet 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2663,10 +2653,10 @@ name = "libp2p-uds"
 version = "0.14.0-alpha.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "async-std 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2675,11 +2665,11 @@ version = "0.7.0-alpha.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-send-wrapper 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-futures 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2692,11 +2682,11 @@ dependencies = [
  "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "quicksink 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustls 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rw-stream-sink 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "soketto 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "soketto 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2709,7 +2699,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p-core 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "thiserror 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "yamux 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2786,12 +2776,12 @@ name = "log"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "log"
-version = "0.4.8"
+version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2911,7 +2901,7 @@ dependencies = [
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2924,7 +2914,7 @@ version = "2.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2967,7 +2957,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "unsigned-varint 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2988,7 +2978,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.53 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3031,7 +3021,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "node-executor 2.0.0",
  "node-primitives 2.0.0",
  "node-rpc 2.0.0",
@@ -3063,7 +3053,7 @@ dependencies = [
  "sc-service-test 2.0.0",
  "sc-telemetry 2.0.0",
  "sc-transaction-pool 2.0.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-authority-discovery 2.0.0",
  "sp-consensus 0.8.0",
  "sp-consensus-babe 0.8.0",
@@ -3081,8 +3071,8 @@ dependencies = [
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "vergen 3.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-futures 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3151,7 +3141,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.12.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core-client 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "node-primitives 2.0.0",
  "sc-rpc 2.0.0",
 ]
@@ -3196,7 +3186,7 @@ dependencies = [
  "pallet-utility 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-authority-discovery 2.0.0",
  "sp-block-builder 2.0.0",
@@ -3221,7 +3211,7 @@ version = "2.0.0"
 dependencies = [
  "ctrlc 3.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "node-template-runtime 2.0.0",
  "sc-basic-authorship 0.8.0",
  "sc-cli 0.8.0",
@@ -3260,7 +3250,7 @@ dependencies = [
  "pallet-timestamp 2.0.0",
  "pallet-transaction-payment 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-block-builder 2.0.0",
  "sp-consensus-aura 0.8.0",
@@ -3310,7 +3300,7 @@ dependencies = [
 name = "node-transaction-factory"
 version = "0.8.0"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-cli 0.8.0",
  "sc-client 0.8.0",
@@ -3386,7 +3376,7 @@ name = "num_cpus"
 version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "hermit-abi 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hermit-abi 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3475,7 +3465,7 @@ dependencies = [
  "frame-support 2.0.0",
  "frame-system 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3493,7 +3483,7 @@ dependencies = [
  "pallet-timestamp 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-application-crypto 2.0.0",
  "sp-consensus-aura 0.8.0",
  "sp-core 2.0.0",
@@ -3512,7 +3502,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-session 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-application-crypto 2.0.0",
  "sp-authority-discovery 2.0.0",
  "sp-core 2.0.0",
@@ -3550,7 +3540,7 @@ dependencies = [
  "pallet-timestamp 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-consensus-babe 0.8.0",
  "sp-core 2.0.0",
  "sp-inherents 2.0.0",
@@ -3571,7 +3561,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-transaction-payment 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3587,7 +3577,7 @@ dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3608,7 +3598,7 @@ dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pwasm-utils 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3627,7 +3617,7 @@ dependencies = [
  "jsonrpc-derive 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-contracts-rpc-runtime-api 0.8.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-blockchain 2.0.0",
@@ -3654,7 +3644,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3670,7 +3660,7 @@ dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3686,7 +3676,7 @@ dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-phragmen 2.0.0",
@@ -3707,7 +3697,7 @@ dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "primitive-types 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha3 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
@@ -3723,7 +3713,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3738,7 +3728,7 @@ dependencies = [
  "frame-system 2.0.0",
  "impl-trait-for-tuples 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-finality-tracker 2.0.0",
  "sp-inherents 2.0.0",
@@ -3754,7 +3744,7 @@ dependencies = [
  "frame-support 2.0.0",
  "frame-system 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3770,7 +3760,7 @@ dependencies = [
  "pallet-finality-tracker 2.0.0",
  "pallet-session 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-finality-grandpa 2.0.0",
  "sp-io 2.0.0",
@@ -3788,7 +3778,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3804,7 +3794,7 @@ dependencies = [
  "pallet-authorship 2.0.0",
  "pallet-session 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-application-crypto 2.0.0",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
@@ -3820,7 +3810,7 @@ dependencies = [
  "frame-support 2.0.0",
  "frame-system 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-keyring 2.0.0",
@@ -3835,7 +3825,7 @@ dependencies = [
  "frame-support 2.0.0",
  "frame-system 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3850,7 +3840,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3865,7 +3855,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3896,7 +3886,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3911,7 +3901,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3928,7 +3918,7 @@ dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-timestamp 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-application-crypto 2.0.0",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
@@ -3947,7 +3937,7 @@ dependencies = [
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -3966,7 +3956,7 @@ dependencies = [
  "pallet-staking-reward-curve 2.0.0",
  "pallet-timestamp 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-keyring 2.0.0",
@@ -3995,7 +3985,7 @@ dependencies = [
  "frame-support 2.0.0",
  "frame-system 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -4010,7 +4000,7 @@ dependencies = [
  "frame-system 2.0.0",
  "impl-trait-for-tuples 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-inherents 2.0.0",
  "sp-io 2.0.0",
@@ -4043,7 +4033,7 @@ dependencies = [
  "jsonrpc-derive 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-transaction-payment-rpc-runtime-api 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-blockchain 2.0.0",
  "sp-core 2.0.0",
@@ -4057,7 +4047,7 @@ version = "2.0.0"
 dependencies = [
  "frame-support 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-runtime 2.0.0",
@@ -4072,7 +4062,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -4087,7 +4077,7 @@ dependencies = [
  "frame-system 2.0.0",
  "pallet-balances 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
@@ -4111,7 +4101,7 @@ dependencies = [
  "data-encoding 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multihash 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "unsigned-varint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -4127,7 +4117,7 @@ dependencies = [
  "data-encoding 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multihash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "static_assertions 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unsigned-varint 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4169,13 +4159,13 @@ dependencies = [
  "arrayvec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitvec 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "byte-slice-cast 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-scale-codec-derive 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec-derive 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "parity-scale-codec-derive"
-version = "1.1.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4515,7 +4505,7 @@ dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "multimap 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "petgraph 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "prost 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4568,7 +4558,7 @@ version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4583,7 +4573,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -4748,7 +4738,7 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4904,7 +4894,7 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4968,7 +4958,7 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "sct 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5029,7 +5019,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "prost 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "prost-build 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5053,7 +5043,7 @@ name = "sc-basic-authorship"
 version = "0.8.0"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-block-builder 0.8.0",
@@ -5095,7 +5085,7 @@ dependencies = [
  "sc-chain-spec-derive 2.0.0",
  "sc-network 0.8.0",
  "sc-telemetry 2.0.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-runtime 2.0.0",
@@ -5124,7 +5114,7 @@ dependencies = [
  "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "names 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rpassword 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5158,7 +5148,7 @@ dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb-memorydb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-block-builder 0.8.0",
@@ -5193,7 +5183,7 @@ dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-executor 0.8.0",
@@ -5224,7 +5214,7 @@ dependencies = [
  "kvdb-memorydb 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb-rocksdb 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-util-mem 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5253,7 +5243,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client 0.8.0",
@@ -5293,7 +5283,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "merlin 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5332,13 +5322,40 @@ dependencies = [
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "sc-consensus-manual-seal"
+version = "0.8.0"
+dependencies = [
+ "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core-client 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-derive 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sc-basic-authorship 0.8.0",
+ "sc-client 0.8.0",
+ "sc-client-api 2.0.0",
+ "sc-transaction-pool 2.0.0",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sp-blockchain 2.0.0",
+ "sp-consensus 0.8.0",
+ "sp-inherents 2.0.0",
+ "sp-runtime 2.0.0",
+ "sp-transaction-pool 2.0.0",
+ "substrate-test-runtime-client 2.0.0",
+ "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "sc-consensus-pow"
 version = "0.8.0"
 dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client-api 2.0.0",
  "sp-api 2.0.0",
@@ -5358,7 +5375,7 @@ version = "0.8.0"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client-api 2.0.0",
@@ -5377,7 +5394,7 @@ dependencies = [
 name = "sc-consensus-uncles"
 version = "0.8.0"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client-api 2.0.0",
  "sp-authorship 2.0.0",
  "sp-consensus 0.8.0",
@@ -5395,7 +5412,7 @@ dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5424,7 +5441,7 @@ name = "sc-executor-common"
 version = "0.8.0"
 dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-allocator 2.0.0",
  "sp-core 2.0.0",
@@ -5438,7 +5455,7 @@ dependencies = [
 name = "sc-executor-wasmi"
 version = "0.8.0"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-executor-common 0.8.0",
@@ -5459,7 +5476,7 @@ dependencies = [
  "cranelift-frontend 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-native 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-wasm 0.50.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-executor-common 0.8.0",
@@ -5483,7 +5500,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5546,7 +5563,7 @@ dependencies = [
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked_hash_set 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5557,7 +5574,7 @@ dependencies = [
  "sc-client 0.8.0",
  "sc-client-api 2.0.0",
  "sc-peerset 2.0.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog_derive 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5586,7 +5603,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-network 0.8.0",
@@ -5602,7 +5619,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-block-builder 0.8.0",
@@ -5632,7 +5649,7 @@ dependencies = [
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.12.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper-rustls 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5658,7 +5675,7 @@ version = "2.0.0"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5673,7 +5690,7 @@ dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-pubsub 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5709,10 +5726,10 @@ dependencies = [
  "jsonrpc-core-client 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-derive 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-pubsub 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-rpc 2.0.0",
@@ -5728,8 +5745,8 @@ dependencies = [
  "jsonrpc-http-server 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-pubsub 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-ws-server 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-runtime 2.0.0",
 ]
@@ -5758,7 +5775,7 @@ dependencies = [
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "grafana-data-source 0.8.0",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5776,7 +5793,7 @@ dependencies = [
  "sc-telemetry 2.0.0",
  "sc-tracing 2.0.0",
  "sc-transaction-pool 2.0.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
@@ -5806,7 +5823,7 @@ dependencies = [
  "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client 0.8.0",
  "sc-network 0.8.0",
  "sc-service 0.8.0",
@@ -5823,7 +5840,7 @@ name = "sc-state-db"
 version = "0.8.0"
 dependencies = [
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
@@ -5837,11 +5854,11 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog-json 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog-scope 4.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5855,10 +5872,10 @@ version = "2.0.0"
 dependencies = [
  "erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "grafana-data-source 0.8.0",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-telemetry 2.0.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5873,10 +5890,10 @@ dependencies = [
  "criterion 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-runtime 2.0.0",
  "sp-transaction-pool 2.0.0",
@@ -5889,7 +5906,7 @@ version = "2.0.0"
 dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client-api 2.0.0",
@@ -5998,7 +6015,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6018,15 +6035,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6041,7 +6058,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6117,7 +6134,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "chrono 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -6169,7 +6186,7 @@ dependencies = [
 
 [[package]]
 name = "soketto"
-version = "0.3.2"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6178,7 +6195,7 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha1 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6196,7 +6213,7 @@ name = "sp-allocator"
 version = "2.0.0"
 dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-std 2.0.0",
  "sp-wasm-interface 2.0.0",
@@ -6250,7 +6267,7 @@ name = "sp-application-crypto"
 version = "2.0.0"
 dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-io 2.0.0",
  "sp-std 2.0.0",
@@ -6277,7 +6294,7 @@ dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "primitive-types 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-debug-derive 2.0.0",
  "sp-std 2.0.0",
 ]
@@ -6319,7 +6336,7 @@ name = "sp-blockchain"
 version = "2.0.0"
 dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6337,9 +6354,10 @@ dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.14.0-alpha.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-inherents 2.0.0",
  "sp-runtime 2.0.0",
@@ -6404,7 +6422,7 @@ dependencies = [
  "impl-serde 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6414,7 +6432,7 @@ dependencies = [
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "schnorrkel 0.8.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-debug-derive 2.0.0",
@@ -6454,7 +6472,7 @@ name = "sp-finality-grandpa"
 version = "2.0.0"
 dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-application-crypto 2.0.0",
  "sp-runtime 2.0.0",
@@ -6487,7 +6505,7 @@ version = "2.0.0"
 dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
  "sp-externalities 0.8.0",
@@ -6520,7 +6538,7 @@ name = "sp-panic-handler"
 version = "2.0.0"
 dependencies = [
  "backtrace 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6528,7 +6546,7 @@ name = "sp-phragmen"
 version = "2.0.0"
 dependencies = [
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-io 2.0.0",
  "sp-runtime 2.0.0",
  "sp-std 2.0.0",
@@ -6539,7 +6557,7 @@ dependencies = [
 name = "sp-rpc"
 version = "2.0.0"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
 ]
@@ -6549,11 +6567,11 @@ name = "sp-runtime"
 version = "2.0.0"
 dependencies = [
  "impl-trait-for-tuples 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-application-crypto 2.0.0",
  "sp-arithmetic 2.0.0",
@@ -6633,7 +6651,7 @@ dependencies = [
 name = "sp-serializer"
 version = "2.0.0"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -6662,7 +6680,7 @@ version = "0.8.0"
 dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6684,7 +6702,7 @@ name = "sp-storage"
 version = "2.0.0"
 dependencies = [
  "impl-serde 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-debug-derive 2.0.0",
  "sp-std 2.0.0",
 ]
@@ -6694,7 +6712,7 @@ name = "sp-test-primitives"
 version = "2.0.0"
 dependencies = [
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-application-crypto 2.0.0",
  "sp-core 2.0.0",
  "sp-runtime 2.0.0",
@@ -6718,9 +6736,9 @@ version = "2.0.0"
 dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-runtime 2.0.0",
 ]
@@ -6748,7 +6766,7 @@ version = "2.0.0"
 dependencies = [
  "impl-serde 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-runtime 2.0.0",
  "sp-std 2.0.0",
 ]
@@ -6798,7 +6816,7 @@ name = "string-interner"
 version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6900,7 +6918,7 @@ dependencies = [
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-rpc-api 0.8.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-storage 2.0.0",
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -6915,11 +6933,11 @@ dependencies = [
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core-client 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-derive 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client 0.8.0",
  "sc-transaction-pool 2.0.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-blockchain 2.0.0",
  "sp-core 2.0.0",
@@ -6956,14 +6974,14 @@ dependencies = [
  "frame-support 2.0.0",
  "frame-system 2.0.0",
  "frame-system-rpc-runtime-api 2.0.0",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "memory-db 0.18.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pallet-babe 2.0.0",
  "pallet-timestamp 2.0.0",
  "parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sc-client 0.8.0",
  "sc-executor 0.8.0",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-api 2.0.0",
  "sp-application-crypto 2.0.0",
  "sp-block-builder 2.0.0",
@@ -7233,7 +7251,7 @@ name = "tinytemplate"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -7270,6 +7288,7 @@ dependencies = [
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project-lite 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-macros 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -7337,7 +7356,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -7348,7 +7376,7 @@ dependencies = [
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -7413,7 +7441,7 @@ dependencies = [
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -7447,7 +7475,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -7463,7 +7491,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -7479,7 +7507,7 @@ dependencies = [
  "bytes 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-sink 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project-lite 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -7489,7 +7517,7 @@ name = "toml"
 version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -7553,7 +7581,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hashbrown 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -7588,7 +7616,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -7765,8 +7793,8 @@ name = "wabt"
 version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -7797,7 +7825,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -7806,7 +7834,7 @@ name = "want"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -7817,76 +7845,76 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.57"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-macro 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-macro 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.57"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bumpalo 3.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bumpalo 3.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-shared 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-shared 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.7"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.57"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-macro-support 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-macro-support 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.57"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-backend 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-shared 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-backend 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-shared 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.57"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "wasm-bindgen-webidl"
-version = "0.2.57"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "anyhow 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-backend 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-backend 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "weedle 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -7895,7 +7923,7 @@ name = "wasm-gc-api"
 version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -7906,13 +7934,13 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "send_wrapper 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-futures 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -7976,10 +8004,10 @@ dependencies = [
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "more-asserts 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "thiserror 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -8032,14 +8060,14 @@ dependencies = [
 
 [[package]]
 name = "web-sys"
-version = "0.3.34"
+version = "0.3.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "anyhow 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "sourcefile 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-webidl 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-webidl 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -8177,7 +8205,7 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-extras 2.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -8217,7 +8245,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "nohash-hasher 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -8294,8 +8322,7 @@ dependencies = [
 "checksum asn1_der 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6fce6b6a0ffdafebd82c87e79e3f40e8d2c523e5fea5566ff6b90509bf98d638"
 "checksum asn1_der_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0d0864d84b8e07b145449be9a8537db86bf9de5ce03b913214694643b4743502"
 "checksum assert_matches 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7deb0a829ca7bcfaf5da70b073a8d128619259a7be8216a355e23f00763059e5"
-"checksum async-macros 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "644a5a8de80f2085a1e7e57cd1544a2a7438f6e003c0790999bd43b92a77cdb2"
-"checksum async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "513ee3c49800679a319912340f5601afda9e72848d7dea3a48bab489e8c1a46f"
+"checksum async-std 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94ef4b71b2f56d7f8793c2a353fa0aa254833c55ab611dc6f3e0bd63db487e2d"
 "checksum async-task 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de6bd58f7b9cc49032559422595c81cbfcf04db2f2133592f70af19e258a1ced"
 "checksum async-tls 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce6977f57fa68da77ffe5542950d47e9c23d65f5bc7cb0a9f8700996913eec7"
 "checksum atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "1803c647a3ec87095e7ae7acfca019e98de5ec9a7d01343f611cf3152ed71a90"
@@ -8322,7 +8349,7 @@ dependencies = [
 "checksum bs58 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b170cd256a3f9fa6b9edae3e44a7dfdfc77e8124dbc3e2612d75f9c3e2396dae"
 "checksum bstr 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8d6c2c5b58ab920a4f5aeaaca34b4488074e8cc7596af94e6f8c6ff247c60245"
 "checksum build-helper 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdce191bf3fa4995ce948c8c83b4640a1745457a149e73c6db75b4ffe36aad5f"
-"checksum bumpalo 3.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8fe2567a8d8a3aedb4e39aa39e186d5673acfd56393c6ac83b2bc5bd82f4369c"
+"checksum bumpalo 3.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5fb8038c1ddc0a5f73787b130f4cc75151e96ed33e417fde765eb5a81e3532f4"
 "checksum byte-slice-cast 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f6209f3b2c1edea170002e016d5ead6903d3bb0a846477f53bbeb614967a52a9"
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0fc10e8cc6b2580fda3f36eb6dc5316657f812a3df879a44a66fc9f0fdbc4855"
@@ -8459,7 +8486,7 @@ dependencies = [
 "checksum hashbrown 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e1de41fb8dba9714efd92241565cdff73f78508c95697dd56787d3cba27e2353"
 "checksum hashbrown 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8e6073d0ca812575946eb5f35ff68dbe519907b25c42530389ff946dc84c6ead"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
-"checksum hermit-abi 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "307c3c9f937f38e3534b1d6447ecf090cafcc9744e4a6360e8b037b2cf5af120"
+"checksum hermit-abi 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f629dc602392d3ec14bfc8a09b5e644d7ffd725102b48b81e59f90f2633621d7"
 "checksum hex 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "023b39be39e3a2da62a94feb433e91e8bcd37676fbc8bea371daf52b7a769a3e"
 "checksum hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "961de220ec9a91af2e1e5bd80d02109155695e516771762381ef8581317066e0"
 "checksum hex-literal-impl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9d4c5c844e2fee0bf673d54c2c177f1713b3d2af2ff6e666b49cb7572e6cf42d"
@@ -8490,7 +8517,7 @@ dependencies = [
 "checksum itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f56a2d0bc861f9165be4eb3442afd3c236d8a98afd426f65d92324ae1091a484"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 "checksum jobserver 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "f2b1d42ef453b30b7387e113da1c83ab1605d90c5b4e0eb8e96d016ed3b8c160"
-"checksum js-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)" = "c40e7a4fafb6cf0be06d25662fc99aacb25f526eb6e1bc0c24100bde5d6a834e"
+"checksum js-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)" = "7889c7c36282151f6bf465be4700359318aef36baa951462382eae49e9577cf9"
 "checksum jsonrpc-client-transports 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0a9ae166c4d1f702d297cd76d4b55758ace80272ffc6dbb139fdc1bf810de40b"
 "checksum jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "fe3b688648f1ef5d5072229e2d672ecb92cbff7d1c79bcf3fd5898f3f3df0970"
 "checksum jsonrpc-core-client 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "080dc110be17701097df238fad3c816d4a478a1899dfbcf8ec8957dd40ec7304"
@@ -8540,7 +8567,7 @@ dependencies = [
 "checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
 "checksum lock_api 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e57b3997725d2b60dbec1297f6c2e2957cc383db1cebd6be812163f969c7d586"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
-"checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
+"checksum log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "1b9ad466a945c9c40f6f9a449c55675547e59bc75a2722d4689042ab3ae80c9c"
 "checksum lru 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "5d8f669d42c72d18514dfca8115689c5f6370a17d980cb5bd777a67f404594c8"
 "checksum lru 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0609345ddee5badacf857d4f547e0e5a2e987db77085c24cd887f73573a04237"
 "checksum mach 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "86dd2487cdfea56def77b88438a2c915fb45113c5319bfe7e14306ca4cd0b0e1"
@@ -8589,7 +8616,7 @@ dependencies = [
 "checksum parity-multihash 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "df3a17dc27848fd99e4f87eb0f8c9baba6ede0a6d555400c850ca45254ef4ce3"
 "checksum parity-multihash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "70a4d7b05e51bff5ae2c29c7b8c3d889985bbd8f4e15b3542fcc1f6f9666d292"
 "checksum parity-scale-codec 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f747c06d9f3b2ad387ac881b9667298c81b1243aa9833f086e05996937c35507"
-"checksum parity-scale-codec-derive 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "34e513ff3e406f3ede6796dcdc83d0b32ffb86668cea1ccf7363118abeb00476"
+"checksum parity-scale-codec-derive 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "492ac3aa93d6caa5d20e4e3e0b75d08e2dcd9dd8a50d19529548b6fe11b3f295"
 "checksum parity-send-wrapper 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aa9777aa91b8ad9dd5aaa04a9b6bcb02c7f1deb952fca5a66034d5e63afc5c6f"
 "checksum parity-util-mem 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8174d85e62c4d615fddd1ef67966bdc5757528891d0742f15b131ad04667b3f9"
 "checksum parity-util-mem 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "900dd84654b048e5bad420bb341658fc2c4d7fea628c22bcf4621733e54859b4"
@@ -8698,8 +8725,8 @@ dependencies = [
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum send_wrapper 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a0eddf2e8f50ced781f288c19f18621fa72a3779e3cb58dbf23b07469b0abeb4"
 "checksum send_wrapper 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "686ef91cf020ad8d4aca9a7047641fd6add626b7b89e14546c2b6a76781cf822"
-"checksum serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "1217f97ab8e8904b57dd22eb61cde455fa7446a9c1cf43966066da047c1f3702"
-"checksum serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "a8c6faef9a2e64b0064f48570289b4bf8823b7581f1d6157c1b52152306651d0"
+"checksum serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
+"checksum serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
 "checksum serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)" = "48c575e0cc52bdd09b47f330f646cf59afc586e9c4e3ccd6fc1f625b8ea1dad7"
 "checksum sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "23962131a91661d643c98940b20fcaffe62d776a823247be80a48fcb8b6fce68"
 "checksum sha1 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
@@ -8715,7 +8742,7 @@ dependencies = [
 "checksum smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0758c52e15a8b5e3691eae6cc559f08eee9406e548a4477ba4e67770a82b6"
 "checksum smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ecf3b85f68e8abaa7555aa5abdb1153079387e60b718283d732f03897fcfc86"
 "checksum snow 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "afb767eee7d257ba202f0b9b08673bc13b22281632ef45267b19f13100accd2f"
-"checksum soketto 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1c9dab3f95c9ebdf3a88268c19af668f637a3c5039c2c56ff2d40b1b2d64a25b"
+"checksum soketto 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3caa0ad6b765419f21e4cfa490ec7514a9fae4af986adef168a69477ba528671"
 "checksum sourcefile 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "4bf77cb82ba8453b42b6ae1d692e4cdc92f9a47beaf89a847c8be83f4e328ad3"
 "checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
@@ -8762,6 +8789,7 @@ dependencies = [
 "checksum tokio-executor 0.2.0-alpha.6 (registry+https://github.com/rust-lang/crates.io-index)" = "9ee9ceecf69145923834ea73f32ba40c790fd877b74a7817dd0b089f1eb9c7c8"
 "checksum tokio-fs 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "3fe6dc22b08d6993916647d108a1a7d15b9cd29c4f4496c62b92c45b5041b7af"
 "checksum tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "5090db468dad16e1a7a54c8c67280c5e4b544f3d3e018f0b913b400261f85926"
+"checksum tokio-macros 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d5795a71419535c6dcecc9b6ca95bdd3c2d6142f7e8343d7beb9923f129aa87e"
 "checksum tokio-reactor 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "6732fe6b53c8d11178dcb77ac6d9682af27fc6d4cb87789449152e5377377146"
 "checksum tokio-rustls 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1df2fa53ac211c136832f530ccb081af9af891af22d685a9493e232c7a359bc2"
 "checksum tokio-sync 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "d06554cce1ae4a50f42fba8023918afa931413aded705b560e29600ccf7c6d76"
@@ -8815,13 +8843,13 @@ dependencies = [
 "checksum want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
 "checksum want 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
 "checksum wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b89c3ce4ce14bdc6fb6beaf9ec7928ca331de5df7e5ea278375642a2f478570d"
-"checksum wasm-bindgen 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)" = "701bc20794a7f9e8dcd85984a848f951ef6c5083322b6dd17fe880c99390f7cd"
-"checksum wasm-bindgen-backend 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)" = "426315280d373e1a828e1c322507d51aa82e03c2fb1d654720b9e2f2368d291d"
-"checksum wasm-bindgen-futures 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)" = "1de54efe80cb87a8fa1f715d60ab47a5eac6b1447dd68665300773f498c229b1"
-"checksum wasm-bindgen-macro 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)" = "d9a8a46373db32c892de910ccca302ecdaf8262abab746324a8a4dac352fc11f"
-"checksum wasm-bindgen-macro-support 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)" = "45d1c6c2259c0f4ef3d61ea0976ea075b6f8185497c4a5457793740c2cda6430"
-"checksum wasm-bindgen-shared 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)" = "dd8e108ae395aae8017b091c4766101f08c635a5074e6631e0085e8a839e5810"
-"checksum wasm-bindgen-webidl 0.2.57 (registry+https://github.com/rust-lang/crates.io-index)" = "7a38859ace1c29c8ed75cd74940d4c96b980837179355de542a2eab3b435bb5c"
+"checksum wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "5205e9afdf42282b192e2310a5b463a6d1c1d774e30dc3c791ac37ab42d2616c"
+"checksum wasm-bindgen-backend 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "11cdb95816290b525b32587d76419facd99662a07e59d3cdb560488a819d9a45"
+"checksum wasm-bindgen-futures 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8bbdd49e3e28b40dec6a9ba8d17798245ce32b019513a845369c641b275135d9"
+"checksum wasm-bindgen-macro 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "574094772ce6921576fb6f2e3f7497b8a76273b6db092be18fc48a082de09dc3"
+"checksum wasm-bindgen-macro-support 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "e85031354f25eaebe78bb7db1c3d86140312a911a106b2e29f9cc440ce3e7668"
+"checksum wasm-bindgen-shared 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "f5e7e61fc929f4c0dddb748b102ebf9f632e2b8d739f2016542b4de2965a9601"
+"checksum wasm-bindgen-webidl 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "ef012a0d93fc0432df126a8eaf547b2dce25a8ce9212e1d3cbeef5c11157975d"
 "checksum wasm-gc-api 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d0c32691b6c7e6c14e7f8fd55361a9088b507aa49620fcd06c09b3a1082186b9"
 "checksum wasm-timer 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "324c5e65a08699c9c4334ba136597ab22b85dccd4b65dd1e36ccf8f723a95b54"
 "checksum wasmi 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bf617d864d25af3587aa745529f7aaa541066c876d57e050c0d0c85c61c92aff"
@@ -8831,7 +8859,7 @@ dependencies = [
 "checksum wasmtime-environ 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a3947662a0b8e05b1418465e64f16de9114f9fec18cc3f56e0ed5aa7737b89d0"
 "checksum wasmtime-jit 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6ed7922689461a7b5bd0d9c7350cac526c8a520a23b3ffd7f5b446ac51dfc51f"
 "checksum wasmtime-runtime 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "781d6bb8b346efaa3dc39746386957cd79b8d841e8652ed9b02d77bcf64fb514"
-"checksum web-sys 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)" = "ba09295448c0b93bc87d2769614d371a924749e5e6c87e4c1df8b2416b49b775"
+"checksum web-sys 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)" = "aaf97caf6aa8c2b1dac90faf0db529d9d63c93846cca4911856f78a83cebf53b"
 "checksum webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d7e664e770ac0110e2384769bcc59ed19e329d81f555916a6e072714957b81b4"
 "checksum webpki-roots 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a262ae37dd9d60f60dd473d1158f9fbebf110ba7b6a5051c8160460f6043718b"
 "checksum webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "91cd5736df7f12a964a5067a12c62fa38e1bd8080aff1f80bc29be7c80d19ab4"
diff --git a/Cargo.toml b/Cargo.toml
index fb15de2ebed12..5dd85091cbf5f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,7 @@ members = [
 	"client/cli",
 	"client/consensus/aura",
 	"client/consensus/babe",
+	"client/consensus/manual-seal",
 	"client/consensus/pow",
 	"client/consensus/slots",
 	"client/consensus/uncles",
diff --git a/bin/node/cli/src/browser.rs b/bin/node/cli/src/browser.rs
index 9747a583c7808..b41bbe6281a8b 100644
--- a/bin/node/cli/src/browser.rs
+++ b/bin/node/cli/src/browser.rs
@@ -43,7 +43,7 @@ async fn start_inner(wasm_ext: Transport) -> Result<Client, Box<dyn std::error::
 
 	info!("Substrate browser node");
 	info!("  version {}", config.full_version());
-	info!("  by Parity Technologies, 2017-2019");
+	info!("  by Parity Technologies, 2017-2020");
 	info!("Chain specification: {}", config.chain_spec.name());
 	info!("Node name: {}", config.name);
 	info!("Roles: {:?}", config.roles);
diff --git a/bin/node/cli/src/cli.rs b/bin/node/cli/src/cli.rs
index 5ade700513e53..2c68789e3803c 100644
--- a/bin/node/cli/src/cli.rs
+++ b/bin/node/cli/src/cli.rs
@@ -101,7 +101,7 @@ pub fn run<I, T, E>(args: I, exit: E, version: sc_cli::VersionInfo) -> error::Re
 		|exit, _cli_args, _custom_args, mut config: Config<_, _>| {
 			info!("{}", version.name);
 			info!("  version {}", config.full_version());
-			info!("  by Parity Technologies, 2017-2019");
+			info!("  by Parity Technologies, 2017-2020");
 			info!("Chain specification: {}", config.chain_spec.name());
 			info!("Node name: {}", config.name);
 			info!("Roles: {}", display_role(&config));
diff --git a/client/consensus/manual-seal/Cargo.toml b/client/consensus/manual-seal/Cargo.toml
new file mode 100644
index 0000000000000..83d7535dae9eb
--- /dev/null
+++ b/client/consensus/manual-seal/Cargo.toml
@@ -0,0 +1,32 @@
+[package]
+name = "sc-consensus-manual-seal"
+version = "0.8.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+description = "Manual sealing engine for Substrate"
+edition = "2018"
+
+[dependencies]
+derive_more = "0.99.2"
+futures = "0.3.1"
+jsonrpc-core = "14.0.5"
+jsonrpc-core-client = "14.0.5"
+jsonrpc-derive = "14.0.5"
+log = "0.4.8"
+parking_lot = "0.10"
+serde = { version = "1.0", features=["derive"] }
+
+sc-client = { path = "../../../client" }
+sc-client-api = { path = "../../../client/api" }
+sc-transaction-pool = { path = "../../transaction-pool", features = ["test-helpers"] }
+sp-blockchain = { path = "../../../primitives/blockchain" }
+sp-consensus = { package = "sp-consensus", path = "../../../primitives/consensus/common" }
+sp-inherents = { path = "../../../primitives/inherents" }
+sp-runtime = {  path = "../../../primitives/runtime" }
+sp-transaction-pool = { path = "../../../primitives/transaction-pool" }
+
+[dev-dependencies]
+sc-basic-authorship = { path = "../../basic-authorship" }
+substrate-test-runtime-client = { path = "../../../test-utils/runtime/client" }
+tokio = { version = "0.2", features = ["rt-core", "macros"] }
+env_logger = "0.7.0"
+tempfile = "3.1.0"
diff --git a/client/consensus/manual-seal/src/error.rs b/client/consensus/manual-seal/src/error.rs
new file mode 100644
index 0000000000000..d6ee9f1767721
--- /dev/null
+++ b/client/consensus/manual-seal/src/error.rs
@@ -0,0 +1,98 @@
+// Copyright 2020 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! A manual sealing engine: the engine listens for rpc calls to seal blocks and create forks.
+//! This is suitable for a testing environment.
+use sp_consensus::{Error as ConsensusError, ImportResult};
+use sp_blockchain::Error as BlockchainError;
+use sp_inherents::Error as InherentsError;
+use futures::channel::{oneshot, mpsc::SendError};
+
+/// Error code for rpc
+mod codes {
+	pub const SERVER_SHUTTING_DOWN: i64 = 10_000;
+	pub const BLOCK_IMPORT_FAILED: i64 = 11_000;
+	pub const EMPTY_TRANSACTION_POOL: i64 = 12_000;
+	pub const BLOCK_NOT_FOUND: i64 = 13_000;
+	pub const CONSENSUS_ERROR: i64 = 14_000;
+	pub const INHERENTS_ERROR: i64 = 15_000;
+	pub const BLOCKCHAIN_ERROR: i64 = 16_000;
+	pub const UNKNOWN_ERROR: i64 = 20_000;
+}
+
+/// errors encountered by background block authorship task
+#[derive(Debug, derive_more::Display, derive_more::From)]
+pub enum Error {
+	/// An error occurred while importing the block
+	#[display(fmt = "Block import failed: {:?}", _0)]
+	BlockImportError(ImportResult),
+	/// Transaction pool is empty, cannot create a block
+	#[display(fmt = "Transaction pool is empty, set create_empty to true,\
+	if you want to create empty blocks")]
+	EmptyTransactionPool,
+	/// encountered during creation of Proposer.
+	#[display(fmt = "Consensus Error: {}", _0)]
+	ConsensusError(ConsensusError),
+	/// Failed to create Inherents data
+	#[display(fmt = "Inherents Error: {}", _0)]
+	InherentError(InherentsError),
+	/// error encountered during finalization
+	#[display(fmt = "Finalization Error: {}", _0)]
+	BlockchainError(BlockchainError),
+	/// Supplied parent_hash doesn't exist in chain
+	#[display(fmt = "Supplied parent_hash: {} doesn't exist in chain", _0)]
+	#[from(ignore)]
+	BlockNotFound(String),
+	/// Some string error
+	#[display(fmt = "{}", _0)]
+	#[from(ignore)]
+	StringError(String),
+	///send error
+	#[display(fmt = "Consensus process is terminating")]
+	Canceled(oneshot::Canceled),
+	///send error
+	#[display(fmt = "Consensus process is terminating")]
+	SendError(SendError),
+	/// Some other error.
+	#[display(fmt="Other error: {}", _0)]
+	Other(Box<dyn std::error::Error + Send>),
+}
+
+impl Error {
+	fn to_code(&self) -> i64 {
+		use Error::*;
+		match self {
+			BlockImportError(_) => codes::BLOCK_IMPORT_FAILED,
+			BlockNotFound(_) => codes::BLOCK_NOT_FOUND,
+			EmptyTransactionPool => codes::EMPTY_TRANSACTION_POOL,
+			ConsensusError(_) => codes::CONSENSUS_ERROR,
+			InherentError(_) => codes::INHERENTS_ERROR,
+			BlockchainError(_) => codes::BLOCKCHAIN_ERROR,
+			SendError(_) | Canceled(_) => codes::SERVER_SHUTTING_DOWN,
+			_ => codes::UNKNOWN_ERROR
+		}
+	}
+}
+
+impl std::convert::From<Error> for jsonrpc_core::Error {
+	fn from(error: Error) -> Self {
+		jsonrpc_core::Error {
+			code: jsonrpc_core::ErrorCode::ServerError(error.to_code()),
+			message: format!("{}", error),
+			data: None
+		}
+	}
+}
diff --git a/client/consensus/manual-seal/src/finalize_block.rs b/client/consensus/manual-seal/src/finalize_block.rs
new file mode 100644
index 0000000000000..419159709f2db
--- /dev/null
+++ b/client/consensus/manual-seal/src/finalize_block.rs
@@ -0,0 +1,64 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Block finalization utilities
+
+use crate::rpc;
+use sp_runtime::{
+	Justification,
+	traits::Block as BlockT,
+	generic::BlockId,
+};
+use std::sync::Arc;
+use sc_client_api::backend::Backend as ClientBackend;
+
+/// params for block finalization.
+pub struct FinalizeBlockParams<B: BlockT, CB> {
+	/// hash of the block
+	pub hash: <B as BlockT>::Hash,
+	/// sender to report errors/success to the rpc.
+	pub sender: rpc::Sender<()>,
+	/// finalization justification
+	pub justification: Option<Justification>,
+	/// client backend
+	pub backend: Arc<CB>,
+}
+
+/// finalizes a block in the backend with the given params.
+pub async fn finalize_block<B, CB>(params: FinalizeBlockParams<B, CB>)
+	where
+		B: BlockT,
+		CB: ClientBackend<B>,
+{
+	let FinalizeBlockParams {
+		hash,
+		mut sender,
+		justification,
+		backend: back_end,
+		..
+	} = params;
+
+	match back_end.finalize_block(BlockId::Hash(hash), justification) {
+		Err(e) => {
+			log::warn!("Failed to finalize block {:?}", e);
+			rpc::send_result(&mut sender, Err(e.into()))
+		}
+		Ok(()) => {
+			log::info!("Successfully finalized block: {}", hash);
+			rpc::send_result(&mut sender, Ok(()))
+		}
+	}
+}
\ No newline at end of file
diff --git a/client/consensus/manual-seal/src/lib.rs b/client/consensus/manual-seal/src/lib.rs
new file mode 100644
index 0000000000000..3bd85b9380f10
--- /dev/null
+++ b/client/consensus/manual-seal/src/lib.rs
@@ -0,0 +1,467 @@
+// Copyright 2020 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! A manual sealing engine: the engine listens for rpc calls to seal blocks and create forks.
+//! This is suitable for a testing environment.
+
+use sp_consensus::{
+	self, BlockImport, Environment, Proposer, BlockCheckParams,
+	ForkChoiceStrategy, BlockImportParams, BlockOrigin,
+	ImportResult, SelectChain,
+	import_queue::{
+		BasicQueue,
+		CacheKeyId,
+		Verifier,
+		BoxBlockImport,
+	},
+};
+use sp_inherents::InherentDataProviders;
+use sp_runtime::{traits::Block as BlockT, Justification};
+use sc_client_api::backend::Backend as ClientBackend;
+use futures::prelude::*;
+use sc_transaction_pool::txpool;
+use std::collections::HashMap;
+use std::sync::Arc;
+
+pub mod rpc;
+mod error;
+mod finalize_block;
+mod seal_new_block;
+use finalize_block::{finalize_block, FinalizeBlockParams};
+use seal_new_block::{seal_new_block, SealBlockParams};
+pub use error::Error;
+pub use rpc::{EngineCommand, CreatedBlock};
+
+/// The synchronous block-import worker of the engine.
+pub struct ManualSealBlockImport<I> {
+	inner: I,
+}
+
+impl<I> From<I> for ManualSealBlockImport<I> {
+	fn from(i: I) -> Self {
+		ManualSealBlockImport { inner: i }
+	}
+}
+
+impl<B, I> BlockImport<B> for ManualSealBlockImport<I>
+	where
+		B: BlockT,
+		I: BlockImport<B, Transaction = ()>,
+{
+	type Error = I::Error;
+	type Transaction = ();
+
+	fn check_block(&mut self, block: BlockCheckParams<B>) -> Result<ImportResult, Self::Error>
+	{
+		self.inner.check_block(block)
+	}
+
+	fn import_block(
+		&mut self,
+		block: BlockImportParams<B, Self::Transaction>,
+		cache: HashMap<CacheKeyId, Vec<u8>>,
+	) -> Result<ImportResult, Self::Error> {
+		self.inner.import_block(block, cache)
+	}
+}
+
+/// The verifier for the manual seal engine; instantly finalizes.
+struct ManualSealVerifier;
+
+impl<B: BlockT> Verifier<B> for ManualSealVerifier {
+	fn verify(
+		&mut self,
+		origin: BlockOrigin,
+		header: B::Header,
+		justification: Option<Justification>,
+		body: Option<Vec<B::Extrinsic>>,
+	) -> Result<(BlockImportParams<B, ()>, Option<Vec<(CacheKeyId, Vec<u8>)>>), String> {
+		let import_params = BlockImportParams {
+			origin,
+			header,
+			justification,
+			post_digests: Vec::new(),
+			body,
+			storage_changes: None,
+			finalized: true,
+			auxiliary: Vec::new(),
+			intermediates: HashMap::new(),
+			fork_choice: Some(ForkChoiceStrategy::LongestChain),
+			allow_missing_state: false,
+			import_existing: false,
+		};
+
+		Ok((import_params, None))
+	}
+}
+
+/// Instantiate the import queue for the manual seal consensus engine.
+pub fn import_queue<B: BlockT>(block_import: BoxBlockImport<B, ()>) -> BasicQueue<B, ()>
+{
+	BasicQueue::new(
+		ManualSealVerifier,
+		block_import,
+		None,
+		None,
+	)
+}
+
+/// Creates the background authorship task for the manual seal engine.
+pub async fn run_manual_seal<B, CB, E, A, C, S, T>(
+	mut block_import: BoxBlockImport<B, T>,
+	mut env: E,
+	backend: Arc<CB>,
+	pool: Arc<txpool::Pool<A>>,
+	mut seal_block_channel: S,
+	select_chain: C,
+	inherent_data_providers: InherentDataProviders,
+)
+	where
+		B: BlockT + 'static,
+		CB: ClientBackend<B> + 'static,
+		E: Environment<B> + 'static,
+		E::Error: std::fmt::Display,
+		<E::Proposer as Proposer<B>>::Error: std::fmt::Display,
+		A: txpool::ChainApi<Block=B, Hash=<B as BlockT>::Hash> + 'static,
+		S: Stream<Item=EngineCommand<<B as BlockT>::Hash>> + Unpin + 'static,
+		C: SelectChain<B> + 'static,
+{
+	while let Some(command) = seal_block_channel.next().await {
+		match command {
+			EngineCommand::SealNewBlock {
+				create_empty,
+				finalize,
+				parent_hash,
+				sender,
+			} => {
+				seal_new_block(
+					SealBlockParams {
+						sender,
+						parent_hash,
+						finalize,
+						create_empty,
+						env: &mut env,
+						select_chain: &select_chain,
+						block_import: &mut block_import,
+						inherent_data_provider: &inherent_data_providers,
+						pool: pool.clone(),
+						backend: backend.clone(),
+					}
+				).await;
+			}
+			EngineCommand::FinalizeBlock { hash, sender, justification } => {
+				finalize_block(
+					FinalizeBlockParams {
+						hash,
+						sender,
+						justification,
+						backend: backend.clone(),
+					}
+				).await
+			}
+		}
+	}
+}
+
+/// runs the background authorship task for the instant seal engine.
+/// instant-seal creates a new block for every transaction imported into
+/// the transaction pool.
+pub async fn run_instant_seal<B, CB, E, A, C, T>(
+	block_import: BoxBlockImport<B, T>,
+	env: E,
+	backend: Arc<CB>,
+	pool: Arc<txpool::Pool<A>>,
+	select_chain: C,
+	inherent_data_providers: InherentDataProviders,
+)
+	where
+		A: txpool::ChainApi<Block=B, Hash=<B as BlockT>::Hash> + 'static,
+		B: BlockT + 'static,
+		CB: ClientBackend<B> + 'static,
+		E: Environment<B> + 'static,
+		E::Error: std::fmt::Display,
+		<E::Proposer as Proposer<B>>::Error: std::fmt::Display,
+		C: SelectChain<B> + 'static
+{
+	// instant-seal creates blocks as soon as transactions are imported
+	// into the transaction pool.
+	let seal_block_channel = pool.import_notification_stream()
+		.map(|_| {
+			EngineCommand::SealNewBlock {
+				create_empty: false,
+				finalize: false,
+				parent_hash: None,
+				sender: None,
+			}
+		});
+
+	run_manual_seal(
+		block_import,
+		env,
+		backend,
+		pool,
+		seal_block_channel,
+		select_chain,
+		inherent_data_providers,
+	).await
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+	use substrate_test_runtime_client::{
+		DefaultTestClientBuilderExt,
+		TestClientBuilderExt,
+		AccountKeyring::*,
+		TestClientBuilder,
+	};
+	use sc_transaction_pool::{
+		BasicPool,
+		txpool::Options,
+		testing::*,
+	};
+	use sp_transaction_pool::TransactionPool;
+	use sp_runtime::generic::BlockId;
+	use sp_blockchain::HeaderBackend;
+	use sp_consensus::ImportedAux;
+	use sc_client::LongestChain;
+	use sp_inherents::InherentDataProviders;
+	use sc_basic_authorship::ProposerFactory;
+
+	fn api() -> TestApi {
+		let mut api = TestApi::default();
+		api.nonce_offset = 0;
+
+		api
+	}
+
+	#[tokio::test]
+	async fn instant_seal() {
+		let builder = TestClientBuilder::new();
+		let backend = builder.backend();
+		let client = Arc::new(builder.build());
+		let select_chain = LongestChain::new(backend.clone());
+		let inherent_data_providers = InherentDataProviders::new();
+		let pool = Arc::new(BasicPool::new(Options::default(), api()));
+		let env = ProposerFactory {
+			transaction_pool: pool.clone(),
+			client: client.clone(),
+		};
+		// this test checks that blocks are created as soon as transactions are imported into the pool.
+		let (sender, receiver) = futures::channel::oneshot::channel();
+		let mut sender = Arc::new(Some(sender));
+		let stream = pool.pool().import_notification_stream()
+			.map(move |_| {
+				// we're only going to submit one tx so this fn will only be called once.
+				let mut_sender =  Arc::get_mut(&mut sender).unwrap();
+				let sender = std::mem::replace(mut_sender, None);
+				EngineCommand::SealNewBlock {
+					create_empty: false,
+					finalize: true,
+					parent_hash: None,
+					sender
+				}
+			});
+		let future = run_manual_seal(
+			Box::new(client.clone()),
+			env,
+			backend.clone(),
+			pool.pool().clone(),
+			stream,
+			select_chain,
+			inherent_data_providers,
+		);
+		std::thread::spawn(|| {
+			let mut rt = tokio::runtime::Runtime::new().unwrap();
+			// spawn the background authorship task
+			rt.block_on(future);
+		});
+		// submit a transaction to pool.
+		let result = pool.submit_one(&BlockId::Number(0), uxt(Alice, 0)).await;
+		// assert that it was successfully imported
+		assert!(result.is_ok());
+		// assert that the background task returns ok
+		let created_block = receiver.await.unwrap().unwrap();
+		assert_eq!(
+			created_block,
+			CreatedBlock {
+				hash: created_block.hash.clone(),
+				aux: ImportedAux {
+					header_only: false,
+					clear_justification_requests: false,
+					needs_justification: false,
+					bad_justification: false,
+					needs_finality_proof: false,
+					is_new_best: true,
+				}
+			}
+		);
+		// assert that there's a new block in the db.
+		assert!(backend.blockchain().header(BlockId::Number(1)).unwrap().is_some())
+	}
+
+	#[tokio::test]
+	async fn manual_seal_and_finalization() {
+		let builder = TestClientBuilder::new();
+		let backend = builder.backend();
+		let client = Arc::new(builder.build());
+		let select_chain = LongestChain::new(backend.clone());
+		let inherent_data_providers = InherentDataProviders::new();
+		let pool = Arc::new(BasicPool::new(Options::default(), api()));
+		let env = ProposerFactory {
+			transaction_pool: pool.clone(),
+			client: client.clone(),
+		};
+		// this test checks that blocks are created as soon as an engine command is sent over the stream.
+		let (mut sink, stream) = futures::channel::mpsc::channel(1024);
+		let future = run_manual_seal(
+			Box::new(client.clone()),
+			env,
+			backend.clone(),
+			pool.pool().clone(),
+			stream,
+			select_chain,
+			inherent_data_providers,
+		);
+		std::thread::spawn(|| {
+			let mut rt = tokio::runtime::Runtime::new().unwrap();
+			// spawn the background authorship task
+			rt.block_on(future);
+		});
+		// submit a transaction to pool.
+		let result = pool.submit_one(&BlockId::Number(0), uxt(Alice, 0)).await;
+		// assert that it was successfully imported
+		assert!(result.is_ok());
+		let (tx, rx) = futures::channel::oneshot::channel();
+		sink.send(EngineCommand::SealNewBlock {
+			parent_hash: None,
+			sender: Some(tx),
+			create_empty: false,
+			finalize: false,
+		}).await.unwrap();
+		let created_block = rx.await.unwrap().unwrap();
+
+		// assert that the background task returns ok
+		assert_eq!(
+			created_block,
+			CreatedBlock {
+				hash: created_block.hash.clone(),
+				aux: ImportedAux {
+					header_only: false,
+					clear_justification_requests: false,
+					needs_justification: false,
+					bad_justification: false,
+					needs_finality_proof: false,
+					is_new_best: true,
+				}
+			}
+		);
+		// assert that there's a new block in the db.
+		let header = backend.blockchain().header(BlockId::Number(1)).unwrap().unwrap();
+		let (tx, rx) = futures::channel::oneshot::channel();
+		sink.send(EngineCommand::FinalizeBlock {
+			sender: Some(tx),
+			hash: header.hash(),
+			justification: None
+		}).await.unwrap();
+		// assert that the background task returns ok
+		assert_eq!(rx.await.unwrap().unwrap(), ());
+	}
+
+	#[tokio::test]
+	async fn manual_seal_fork_blocks() {
+		let builder = TestClientBuilder::new();
+		let backend = builder.backend();
+		let client = Arc::new(builder.build());
+		let select_chain = LongestChain::new(backend.clone());
+		let inherent_data_providers = InherentDataProviders::new();
+		let pool = Arc::new(BasicPool::new(Options::default(), api()));
+		let env = ProposerFactory {
+			transaction_pool: pool.clone(),
+			client: client.clone(),
+		};
+		// this test checks that blocks are created as soon as an engine command is sent over the stream.
+		let (mut sink, stream) = futures::channel::mpsc::channel(1024);
+		let future = run_manual_seal(
+			Box::new(client.clone()),
+			env,
+			backend.clone(),
+			pool.pool().clone(),
+			stream,
+			select_chain,
+			inherent_data_providers,
+		);
+		std::thread::spawn(|| {
+			let mut rt = tokio::runtime::Runtime::new().unwrap();
+			// spawn the background authorship task
+			rt.block_on(future);
+		});
+		// submit a transaction to pool.
+		let result = pool.submit_one(&BlockId::Number(0), uxt(Alice, 0)).await;
+		// assert that it was successfully imported
+		assert!(result.is_ok());
+
+		let (tx, rx) = futures::channel::oneshot::channel();
+		sink.send(EngineCommand::SealNewBlock {
+			parent_hash: None,
+			sender: Some(tx),
+			create_empty: false,
+			finalize: false,
+		}).await.unwrap();
+		let created_block = rx.await.unwrap().unwrap();
+
+		// assert that the background task returns ok
+		assert_eq!(
+			created_block,
+			CreatedBlock {
+				hash: created_block.hash.clone(),
+				aux: ImportedAux {
+					header_only: false,
+					clear_justification_requests: false,
+					needs_justification: false,
+					bad_justification: false,
+					needs_finality_proof: false,
+					is_new_best: true
+				}
+			}
+		);
+		// assert that there's a new block in the db.
+		assert!(backend.blockchain().header(BlockId::Number(0)).unwrap().is_some());
+		assert!(pool.submit_one(&BlockId::Number(1), uxt(Alice, 1)).await.is_ok());
+
+		let (tx1, rx1) = futures::channel::oneshot::channel();
+		assert!(sink.send(EngineCommand::SealNewBlock {
+			parent_hash: Some(created_block.hash.clone()),
+			sender: Some(tx1),
+			create_empty: false,
+			finalize: false,
+		}).await.is_ok());
+		assert!(rx1.await.unwrap().is_ok());
+		assert!(backend.blockchain().header(BlockId::Number(1)).unwrap().is_some());
+
+		assert!(pool.submit_one(&BlockId::Number(2), uxt(Alice, 2)).await.is_ok());
+		let (tx2, rx2) = futures::channel::oneshot::channel();
+		assert!(sink.send(EngineCommand::SealNewBlock {
+			parent_hash: Some(created_block.hash),
+			sender: Some(tx2),
+			create_empty: false,
+			finalize: false,
+		}).await.is_ok());
+		let imported = rx2.await.unwrap().unwrap();
+		// assert that fork block is in the db
+		assert!(backend.blockchain().header(BlockId::Hash(imported.hash)).unwrap().is_some())
+	}
+}
diff --git a/client/consensus/manual-seal/src/rpc.rs b/client/consensus/manual-seal/src/rpc.rs
new file mode 100644
index 0000000000000..f3f0fe4a128ed
--- /dev/null
+++ b/client/consensus/manual-seal/src/rpc.rs
@@ -0,0 +1,163 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! RPC interface for the ManualSeal Engine.
+use sp_consensus::ImportedAux;
+use jsonrpc_core::Error;
+use jsonrpc_derive::rpc;
+use futures::{
+	channel::{mpsc, oneshot},
+	TryFutureExt,
+	FutureExt,
+	SinkExt
+};
+use serde::{Deserialize, Serialize};
+use sp_runtime::Justification;
+pub use self::gen_client::Client as ManualSealClient;
+
+/// Future's type for jsonrpc
+type FutureResult<T> = Box<dyn jsonrpc_core::futures::Future<Item = T, Error = Error> + Send>;
+/// sender passed to the authorship task to report errors or successes.
+pub type Sender<T> = Option<oneshot::Sender<std::result::Result<T, crate::Error>>>;
+
+/// Message sent to the background authorship task, usually by RPC.
+pub enum EngineCommand<Hash> {
+	/// Tells the engine to propose a new block
+	///
+	/// if create_empty == true, it will create empty blocks if there are no transactions
+	/// in the transaction pool.
+	///
+	/// if finalize == true, the block will be instantly finalized.
+	SealNewBlock {
+		/// if true, empty blocks(without extrinsics) will be created.
+		/// otherwise, will return Error::EmptyTransactionPool.
+		create_empty: bool,
+		/// instantly finalize this block?
+		finalize: bool,
+		/// specify the parent hash of the about-to-created block
+		parent_hash: Option<Hash>,
+		/// sender to report errors/success to the rpc.
+		sender: Sender<CreatedBlock<Hash>>,
+	},
+	/// Tells the engine to finalize the block with the supplied hash
+	FinalizeBlock {
+		/// hash of the block
+		hash: Hash,
+		/// sender to report errors/success to the rpc.
+		sender: Sender<()>,
+		/// finalization justification
+		justification: Option<Justification>,
+	}
+}
+
+/// RPC trait that provides methods for interacting with the manual-seal authorship task over rpc.
+#[rpc]
+pub trait ManualSealApi<Hash> {
+	/// Instructs the manual-seal authorship task to create a new block
+	#[rpc(name = "engine_createBlock")]
+	fn create_block(
+		&self,
+		create_empty: bool,
+		finalize: bool,
+		parent_hash: Option<Hash>
+	) -> FutureResult<CreatedBlock<Hash>>;
+
+	/// Instructs the manual-seal authorship task to finalize a block
+	#[rpc(name = "engine_finalizeBlock")]
+	fn finalize_block(
+		&self,
+		hash: Hash,
+		justification: Option<Justification>
+	) -> FutureResult<bool>;
+}
+
+/// A struct that implements the [`ManualSealApi`].
+pub struct ManualSeal<Hash> {
+	import_block_channel: mpsc::Sender<EngineCommand<Hash>>,
+}
+
+/// return type of `engine_createBlock`
+#[derive(Debug, Deserialize, Serialize, PartialEq, Eq)]
+pub struct CreatedBlock<Hash> {
+	/// hash of the created block.
+	pub hash: Hash,
+	/// some extra details about the import operation
+	pub aux: ImportedAux
+}
+
+impl<Hash> ManualSeal<Hash> {
+	/// Create new `ManualSeal` with the given reference to the client.
+	pub fn new(import_block_channel: mpsc::Sender<EngineCommand<Hash>>) -> Self {
+		Self { import_block_channel }
+	}
+}
+
+impl<Hash: Send + 'static> ManualSealApi<Hash> for ManualSeal<Hash> {
+	fn create_block(
+		&self,
+		create_empty: bool,
+		finalize: bool,
+		parent_hash: Option<Hash>
+	) -> FutureResult<CreatedBlock<Hash>> {
+		let mut sink = self.import_block_channel.clone();
+		let future = async move {
+			let (sender, receiver) = oneshot::channel();
+			let command = EngineCommand::SealNewBlock {
+				create_empty,
+				finalize,
+				parent_hash,
+				sender: Some(sender),
+			};
+			sink.send(command).await?;
+			receiver.await?
+		}.boxed();
+
+		Box::new(future.map_err(Error::from).compat())
+	}
+
+	fn finalize_block(&self, hash: Hash, justification: Option<Justification>) -> FutureResult<bool> {
+		let mut sink = self.import_block_channel.clone();
+		let future = async move {
+			let (sender, receiver) = oneshot::channel();
+			sink.send(
+				EngineCommand::FinalizeBlock { hash, sender: Some(sender), justification }
+			).await?;
+
+			receiver.await?.map(|_| true)
+		};
+
+		Box::new(future.boxed().map_err(Error::from).compat())
+	}
+}
+
+/// report any errors or successes encountered by the authorship task back
+/// to the rpc
+pub fn send_result<T: std::fmt::Debug>(
+	sender: &mut Sender<T>,
+	result: std::result::Result<T, crate::Error>
+) {
+	if let Some(sender) = sender.take() {
+		if let Err(err) = sender.send(result) {
+			log::warn!("Server is shutting down: {:?}", err)
+		}
+	} else {
+		// instant seal doesn't report errors over rpc, simply log them.
+		match result {
+			Ok(r) => log::info!("Instant Seal success: {:?}", r),
+			Err(e) => log::error!("Instant Seal encountered an error: {}", e)
+		}
+	}
+}
diff --git a/client/consensus/manual-seal/src/seal_new_block.rs b/client/consensus/manual-seal/src/seal_new_block.rs
new file mode 100644
index 0000000000000..53dc82d353e67
--- /dev/null
+++ b/client/consensus/manual-seal/src/seal_new_block.rs
@@ -0,0 +1,148 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Block sealing utilities
+
+use crate::{Error, rpc};
+use std::sync::Arc;
+use sp_runtime::{
+	traits::{Block as BlockT, Header as HeaderT},
+	generic::BlockId,
+};
+use futures::prelude::*;
+use sc_transaction_pool::txpool;
+use rpc::CreatedBlock;
+
+use sp_consensus::{
+	self, BlockImport, Environment, Proposer,
+	ForkChoiceStrategy, BlockImportParams, BlockOrigin,
+	ImportResult, SelectChain,
+	import_queue::BoxBlockImport,
+};
+use sp_blockchain::HeaderBackend;
+use sc_client_api::backend::Backend as ClientBackend;
+use std::collections::HashMap;
+use std::time::Duration;
+use sp_inherents::InherentDataProviders;
+
+/// max duration for creating a proposal in secs
+const MAX_PROPOSAL_DURATION: u64 = 10;
+
+/// params for sealing a new block
+pub struct SealBlockParams<'a, B: BlockT, C, CB, E, T, P: txpool::ChainApi> {
+	/// if true, empty blocks(without extrinsics) will be created.
+	/// otherwise, will return Error::EmptyTransactionPool.
+	pub create_empty: bool,
+	/// instantly finalize this block?
+	pub finalize: bool,
+	/// specify the parent hash of the about-to-created block
+	pub parent_hash: Option<<B as BlockT>::Hash>,
+	/// sender to report errors/success to the rpc.
+	pub sender: rpc::Sender<CreatedBlock<<B as BlockT>::Hash>>,
+	/// transaction pool
+	pub pool: Arc<txpool::Pool<P>>,
+	/// client backend
+	pub backend: Arc<CB>,
+	/// Environment trait object for creating a proposer
+	pub env: &'a mut E,
+	/// SelectChain object
+	pub select_chain: &'a C,
+	/// block import object
+	pub block_import: &'a mut BoxBlockImport<B, T>,
+	/// inherent data provider
+	pub inherent_data_provider: &'a InherentDataProviders,
+}
+
+/// seals a new block with the given params
+pub async fn seal_new_block<B, SC, CB, E, T, P>(
+	SealBlockParams {
+		create_empty,
+		finalize,
+		pool,
+		parent_hash,
+		backend: back_end,
+		select_chain,
+		block_import,
+		env,
+		inherent_data_provider,
+		mut sender,
+		..
+	}: SealBlockParams<'_, B, SC, CB, E, T, P>
+)
+	where
+		B: BlockT,
+		CB: ClientBackend<B>,
+		E: Environment<B>,
+		<E as Environment<B>>::Error: std::fmt::Display,
+		<E::Proposer as Proposer<B>>::Error: std::fmt::Display,
+		P: txpool::ChainApi<Block=B, Hash=<B as BlockT>::Hash>,
+		SC: SelectChain<B>,
+{
+	let future = async {
+		if pool.status().ready == 0 && !create_empty {
+			return Err(Error::EmptyTransactionPool)
+		}
+
+		// get the header to build this new block on.
+		// use the parent_hash supplied via `EngineCommand`
+		// or fetch the best_block.
+		let header = match parent_hash {
+			Some(hash) => {
+				match back_end.blockchain().header(BlockId::Hash(hash))? {
+					Some(header) => header,
+					None => return Err(Error::BlockNotFound(format!("{}", hash))),
+				}
+			}
+			None => select_chain.best_chain()?
+		};
+
+		let mut proposer = env.init(&header)
+			.map_err(|err| Error::StringError(format!("{}", err))).await?;
+		let id = inherent_data_provider.create_inherent_data()?;
+		let inherents_len = id.len();
+		let proposal = proposer.propose(id, Default::default(), Duration::from_secs(MAX_PROPOSAL_DURATION), false.into())
+			.map_err(|err| Error::StringError(format!("{}", err))).await?;
+
+		if proposal.block.extrinsics().len() == inherents_len && !create_empty {
+			return Err(Error::EmptyTransactionPool)
+		}
+
+		let (header, body) = proposal.block.deconstruct();
+		let params = BlockImportParams {
+			origin: BlockOrigin::Own,
+			header: header.clone(),
+			justification: None,
+			post_digests: Vec::new(),
+			body: Some(body),
+			finalized: finalize,
+			storage_changes: None,
+			auxiliary: Vec::new(),
+			intermediates: HashMap::new(),
+			fork_choice: Some(ForkChoiceStrategy::LongestChain),
+			allow_missing_state: false,
+			import_existing: false,
+		};
+
+		match block_import.import_block(params, HashMap::new())? {
+			ImportResult::Imported(aux) => {
+				Ok(CreatedBlock { hash: <B as BlockT>::Header::hash(&header), aux })
+			},
+			other => Err(other.into()),
+		}
+	};
+
+	rpc::send_result(&mut sender, future.await)
+}
diff --git a/client/transaction-pool/Cargo.toml b/client/transaction-pool/Cargo.toml
index 701826307129d..c3cd8c9838d71 100644
--- a/client/transaction-pool/Cargo.toml
+++ b/client/transaction-pool/Cargo.toml
@@ -10,14 +10,17 @@ derive_more = "0.99.2"
 futures = { version = "0.3.1", features = ["compat"] }
 log = "0.4.8"
 parking_lot = "0.9.0"
-sp-core = { version = "2.0.0", path = "../../primitives/core" }
-sp-api = { version = "2.0.0", path = "../../primitives/api" }
-sp-runtime = { version = "2.0.0", path = "../../primitives/runtime" }
-sc-transaction-graph = { version = "2.0.0", path = "./graph" }
-sp-transaction-pool = { version = "2.0.0", path = "../../primitives/transaction-pool" }
-sc-client-api = { version = "2.0.0", path = "../api" }
-sp-blockchain = { version = "2.0.0", path = "../../primitives/blockchain" }
+sp-core = { path = "../../primitives/core" }
+sp-api = { path = "../../primitives/api" }
+sp-runtime = { path = "../../primitives/runtime" }
+sc-transaction-graph = { path = "./graph" }
+sp-transaction-pool = { path = "../../primitives/transaction-pool" }
+sc-client-api = { path = "../api" }
+sp-blockchain = { path = "../../primitives/blockchain" }
+substrate-test-runtime-client = { path = "../../test-utils/runtime/client" }
 
 [dev-dependencies]
 sp-keyring = { version = "2.0.0", path = "../../primitives/keyring" }
-substrate-test-runtime-client = { version = "2.0.0", path = "../../test-utils/runtime/client" }
+
+[features]
+test-helpers = []
diff --git a/client/transaction-pool/src/lib.rs b/client/transaction-pool/src/lib.rs
index b085dba279c2b..2771471ad9636 100644
--- a/client/transaction-pool/src/lib.rs
+++ b/client/transaction-pool/src/lib.rs
@@ -24,6 +24,8 @@ pub mod error;
 
 #[cfg(test)]
 mod tests;
+#[cfg(any(feature = "test-helpers", test))]
+pub mod testing;
 
 pub use sc_transaction_graph as txpool;
 pub use crate::api::{FullChainApi, LightChainApi};
diff --git a/client/transaction-pool/src/testing.rs b/client/transaction-pool/src/testing.rs
new file mode 100644
index 0000000000000..f4fecbe1d633b
--- /dev/null
+++ b/client/transaction-pool/src/testing.rs
@@ -0,0 +1,185 @@
+// Copyright 2018-2020 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Utilities for testing transaction pool
+use super::*;
+use codec::Encode;
+use sp_runtime::{
+	generic::{BlockId},
+	traits::{Hash as HashT, BlakeTwo256},
+	transaction_validity::{TransactionValidity, ValidTransaction, TransactionValidityError, InvalidTransaction},
+};
+use std::collections::HashSet;
+use crate::BasicPool;
+use parking_lot::RwLock;
+use sc_transaction_graph::{self, ExHash, Pool};
+use substrate_test_runtime_client::{
+	runtime::{AccountId, Block, BlockNumber, Extrinsic, Hash, Header, Index, Transfer},
+	AccountKeyring,
+};
+
+/// `ChainApi` for test environments
+pub struct TestApi {
+	/// transaction modifier
+	pub modifier: RwLock<Box<dyn Fn(&mut ValidTransaction) + Send + Sync>>,
+	/// cache of block number to extrinsics
+	pub chain_block_by_number: RwLock<HashMap<BlockNumber, Vec<Extrinsic>>>,
+	/// cache of block number to header
+	pub chain_headers_by_number: RwLock<HashMap<BlockNumber, Header>>,
+	/// cache of invalid hashes
+	pub invalid_hashes: RwLock<HashSet<ExHash<Self>>>,
+	/// validation requests
+	pub validation_requests: RwLock<Vec<Extrinsic>>,
+	/// used for calculating nonce for extrinsics
+	pub nonce_offset: u64,
+}
+
+impl TestApi {
+	/// create an instance of `TestApi`
+	pub fn default() -> Self {
+		TestApi {
+			modifier: RwLock::new(Box::new(|_| {})),
+			chain_block_by_number: RwLock::new(HashMap::new()),
+			invalid_hashes: RwLock::new(HashSet::new()),
+			chain_headers_by_number: RwLock::new(HashMap::new()),
+			validation_requests: RwLock::new(Default::default()),
+			nonce_offset: 209,
+		}
+	}
+
+	/// add a block to `TestApi`
+	pub fn push_block(&self, block_number: BlockNumber, xts: Vec<Extrinsic>) {
+		self.chain_block_by_number.write().insert(block_number, xts);
+		self.chain_headers_by_number.write().insert(block_number, Header {
+			number: block_number,
+			digest: Default::default(),
+			extrinsics_root:  Default::default(),
+			parent_hash: Default::default(),
+			state_root: Default::default(),
+		});
+	}
+}
+
+impl sc_transaction_graph::ChainApi for TestApi {
+	type Block = Block;
+	type Hash = Hash;
+	type Error = error::Error;
+	type ValidationFuture = futures::future::Ready<error::Result<TransactionValidity>>;
+	type BodyFuture = futures::future::Ready<error::Result<Option<Vec<Extrinsic>>>>;
+
+	fn validate_transaction(
+		&self,
+		at: &BlockId<Self::Block>,
+		uxt: sc_transaction_graph::ExtrinsicFor<Self>,
+	) -> Self::ValidationFuture {
+
+		self.validation_requests.write().push(uxt.clone());
+
+		let expected = index(at, self.nonce_offset);
+		let requires = if expected == uxt.transfer().nonce {
+			vec![]
+		} else {
+			vec![vec![uxt.transfer().nonce as u8 - 1]]
+		};
+		let provides = vec![vec![uxt.transfer().nonce as u8]];
+
+		if self.invalid_hashes.read().contains(&self.hash_and_length(&uxt).0) {
+			return futures::future::ready(Ok(
+				Err(TransactionValidityError::Invalid(InvalidTransaction::Custom(0)))
+			))
+		}
+
+		let mut validity = ValidTransaction {
+			priority: 1,
+			requires,
+			provides,
+			longevity: 64,
+			propagate: true,
+		};
+
+		(self.modifier.read())(&mut validity);
+
+		futures::future::ready(Ok(Ok(validity)))
+	}
+
+	fn block_id_to_number(
+		&self,
+		at: &BlockId<Self::Block>,
+	) -> error::Result<Option<sc_transaction_graph::NumberFor<Self>>> {
+		Ok(Some(number_of(at)))
+	}
+
+	fn block_id_to_hash(
+		&self,
+		at: &BlockId<Self::Block>,
+	) -> error::Result<Option<sc_transaction_graph::BlockHash<Self>>> {
+		Ok(match at {
+			BlockId::Hash(x) => Some(x.clone()),
+			_ => Some(Default::default()),
+		})
+	}
+
+	fn hash_and_length(
+		&self,
+		ex: &sc_transaction_graph::ExtrinsicFor<Self>,
+	) -> (Self::Hash, usize) {
+		let encoded = ex.encode();
+		(BlakeTwo256::hash(&encoded), encoded.len())
+	}
+
+	fn block_body(&self, id: &BlockId<Self::Block>) -> Self::BodyFuture {
+		futures::future::ready(Ok(if let BlockId::Number(num) = id {
+			self.chain_block_by_number.read().get(num).cloned()
+		} else {
+			None
+		}))
+	}
+}
+
+/// get an instance of `BasicPool` with default options and `TestApi`
+/// as the `ChainApi`
+pub fn maintained_pool() -> BasicPool<TestApi, Block> {
+	BasicPool::new(Default::default(), TestApi::default())
+}
+
+/// generate nonce to be used with testing TestApi
+pub fn index(at: &BlockId<Block>, offset: u64) -> u64 {
+	offset + number_of(at)
+}
+
+fn number_of(at: &BlockId<Block>) -> u64 {
+	match at {
+		BlockId::Number(n) => *n as u64,
+		_ => 0,
+	}
+}
+
+/// generates a transfer extrinsic, given a keyring and a nonce.
+pub fn uxt(who: AccountKeyring, nonce: Index) -> Extrinsic {
+	let transfer = Transfer {
+		from: who.into(),
+		to: AccountId::default(),
+		nonce,
+		amount: 1,
+	};
+	let signature = transfer.using_encoded(|e| who.sign(e));
+	Extrinsic::Transfer(transfer, signature.into())
+}
+
+/// creates a transaction pool with the TestApi ChainApi
+pub fn pool() -> Pool<TestApi> {
+	Pool::new(Default::default(), Arc::new(TestApi::default()))
+}
diff --git a/client/transaction-pool/src/tests.rs b/client/transaction-pool/src/tests.rs
index 778536b7b9ae3..b06e335fafc5a 100644
--- a/client/transaction-pool/src/tests.rs
+++ b/client/transaction-pool/src/tests.rs
@@ -16,163 +16,19 @@
 
 use super::*;
 
-use crate::{BasicPool, MaintainedTransactionPool};
-use codec::Encode;
 use futures::executor::block_on;
-use parking_lot::RwLock;
-use sc_transaction_graph::{self, ExHash, Pool};
+use txpool::{self, Pool};
+use substrate_test_runtime_client::{runtime::Index, AccountKeyring::*};
 use sp_runtime::{
-	generic::{self, BlockId},
-	traits::{BlakeTwo256, Hash as HashT},
-	transaction_validity::{TransactionValidity, ValidTransaction, TransactionValidityError, InvalidTransaction},
+	generic::BlockId,
+	transaction_validity::ValidTransaction,
 };
-use std::collections::HashSet;
-use substrate_test_runtime_client::{
-	runtime::{AccountId, Block, BlockNumber, Extrinsic, Hash, Header, Index, Transfer},
-	AccountKeyring::{self, *},
-};
-
-struct TestApi {
-	pub modifier: RwLock<Box<dyn Fn(&mut ValidTransaction) + Send + Sync>>,
-	pub chain_block_by_number: RwLock<HashMap<BlockNumber, Vec<Extrinsic>>>,
-	pub chain_headers_by_number: RwLock<HashMap<BlockNumber, Header>>,
-	pub invalid_hashes: RwLock<HashSet<ExHash<Self>>>,
-	pub validation_requests: RwLock<Vec<Extrinsic>>,
-}
-
-impl TestApi {
-	fn default() -> Self {
-		TestApi {
-			modifier: RwLock::new(Box::new(|_| {})),
-			chain_block_by_number: RwLock::new(HashMap::new()),
-			invalid_hashes: RwLock::new(HashSet::new()),
-			chain_headers_by_number: RwLock::new(HashMap::new()),
-			validation_requests: RwLock::new(Default::default()),
-		}
-	}
-
-	fn push_block(&self, block_number: BlockNumber, xts: Vec<Extrinsic>) {
-		self.chain_block_by_number.write().insert(block_number, xts);
-		self.chain_headers_by_number.write().insert(block_number, Header {
-			number: block_number,
-			digest: Default::default(),
-			extrinsics_root:  Default::default(),
-			parent_hash: Default::default(),
-			state_root: Default::default(),
-		});
-	}
-}
-
-impl sc_transaction_graph::ChainApi for TestApi {
-	type Block = Block;
-	type Hash = Hash;
-	type Error = error::Error;
-	type ValidationFuture = futures::future::Ready<error::Result<TransactionValidity>>;
-	type BodyFuture = futures::future::Ready<error::Result<Option<Vec<Extrinsic>>>>;
-
-	fn validate_transaction(
-		&self,
-		at: &BlockId<Self::Block>,
-		uxt: sc_transaction_graph::ExtrinsicFor<Self>,
-	) -> Self::ValidationFuture {
-
-		self.validation_requests.write().push(uxt.clone());
-
-		let expected = index(at);
-		let requires = if expected == uxt.transfer().nonce {
-			vec![]
-		} else {
-			vec![vec![uxt.transfer().nonce as u8 - 1]]
-		};
-		let provides = vec![vec![uxt.transfer().nonce as u8]];
-
-		if self.invalid_hashes.read().contains(&self.hash_and_length(&uxt).0) {
-			return futures::future::ready(Ok(
-				Err(TransactionValidityError::Invalid(InvalidTransaction::Custom(0)))
-			))
-		}
-
-		let mut validity = ValidTransaction {
-			priority: 1,
-			requires,
-			provides,
-			longevity: 64,
-			propagate: true,
-		};
-
-		(self.modifier.read())(&mut validity);
-
-		futures::future::ready(Ok(Ok(validity)))
-	}
-
-	fn block_id_to_number(
-		&self,
-		at: &BlockId<Self::Block>,
-	) -> error::Result<Option<sc_transaction_graph::NumberFor<Self>>> {
-		Ok(Some(number_of(at)))
-	}
-
-	fn block_id_to_hash(
-		&self,
-		at: &BlockId<Self::Block>,
-	) -> error::Result<Option<sc_transaction_graph::BlockHash<Self>>> {
-		Ok(match at {
-			generic::BlockId::Hash(x) => Some(x.clone()),
-			_ => Some(Default::default()),
-		})
-	}
-
-	fn hash_and_length(
-		&self,
-		ex: &sc_transaction_graph::ExtrinsicFor<Self>,
-	) -> (Self::Hash, usize) {
-		let encoded = ex.encode();
-		(BlakeTwo256::hash(&encoded), encoded.len())
-	}
-
-	fn block_body(&self, id: &BlockId<Self::Block>) -> Self::BodyFuture {
-		futures::future::ready(Ok(if let BlockId::Number(num) = id {
-			self.chain_block_by_number.read().get(num).cloned()
-		} else {
-			None
-		}))
-	}
-}
-
-fn index(at: &BlockId<Block>) -> u64 {
-	209 + number_of(at)
-}
-
-fn number_of(at: &BlockId<Block>) -> u64 {
-	match at {
-		generic::BlockId::Number(n) => *n as u64,
-		_ => 0,
-	}
-}
-
-fn uxt(who: AccountKeyring, nonce: Index) -> Extrinsic {
-	let transfer = Transfer {
-		from: who.into(),
-		to: AccountId::default(),
-		nonce,
-		amount: 1,
-	};
-	let signature = transfer.using_encoded(|e| who.sign(e));
-	Extrinsic::Transfer(transfer, signature.into())
-}
-
-fn pool() -> Pool<TestApi> {
-	Pool::new(Default::default(), TestApi::default().into())
-}
-
-fn maintained_pool() -> BasicPool<TestApi, Block> {
-	BasicPool::new(Default::default(), TestApi::default())
-}
+use testing::*;
 
 #[test]
 fn submission_should_work() {
 	let pool = pool();
-	assert_eq!(209, index(&BlockId::number(0)));
+	assert_eq!(209, index(&BlockId::number(0), 209));
 	block_on(pool.submit_one(&BlockId::number(0), uxt(Alice, 209))).unwrap();
 
 	let pending: Vec<_> = pool.ready().map(|a| a.data.transfer().nonce).collect();
diff --git a/primitives/consensus/common/Cargo.toml b/primitives/consensus/common/Cargo.toml
index 3ae79caa43126..87354160286fd 100644
--- a/primitives/consensus/common/Cargo.toml
+++ b/primitives/consensus/common/Cargo.toml
@@ -19,6 +19,7 @@ sp-version = { version = "2.0.0", path = "../../version" }
 sp-runtime = { version = "2.0.0", path = "../../runtime" }
 codec = { package = "parity-scale-codec", version = "1.0.0", features = ["derive"] }
 parking_lot = "0.9.0"
+serde = { version = "1.0", features = ["derive"] }
 
 [dev-dependencies]
 sp-test-primitives = { version = "2.0.0", path = "../../test-primitives" }
diff --git a/primitives/consensus/common/src/block_import.rs b/primitives/consensus/common/src/block_import.rs
index 71315b63ef338..af1b61a9febde 100644
--- a/primitives/consensus/common/src/block_import.rs
+++ b/primitives/consensus/common/src/block_import.rs
@@ -16,10 +16,9 @@
 
 //! Block import helpers.
 
-use sp_runtime::{
-	Justification,
-	traits::{Block as BlockT, DigestItemFor, Header as HeaderT, NumberFor, HasherFor},
-};
+use sp_runtime::traits::{Block as BlockT, DigestItemFor, Header as HeaderT, NumberFor, HasherFor};
+use sp_runtime::Justification;
+use serde::{Serialize, Deserialize};
 use std::borrow::Cow;
 use std::collections::HashMap;
 use std::sync::Arc;
@@ -42,7 +41,7 @@ pub enum ImportResult {
 }
 
 /// Auxiliary data associated with an imported block result.
-#[derive(Debug, Default, PartialEq, Eq)]
+#[derive(Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
 pub struct ImportedAux {
 	/// Only the header has been imported. Block body verification was skipped.
 	pub header_only: bool,
diff --git a/primitives/inherents/src/lib.rs b/primitives/inherents/src/lib.rs
index f79d8357a566c..f1b8db982d337 100644
--- a/primitives/inherents/src/lib.rs
+++ b/primitives/inherents/src/lib.rs
@@ -147,6 +147,11 @@ impl InherentData {
 			None => Ok(None)
 		}
 	}
+
+	/// Get the number of inherents in this instance
+	pub fn len(&self) -> usize {
+		self.data.len()
+	}
 }
 
 /// The result of checking inherents.