Raise MSRV to 1.31.0

One of our dependencies, fuchsia-cprng, now requires 1.31.0.

.cirrus.yml

@@ -14,7 +14,7 @@ task:
   setup_script:
     - pkg install -y curl
     - curl https://sh.rustup.rs -sSf --output rustup.sh
-    - sh rustup.sh -y --default-toolchain 1.27.0
+    - sh rustup.sh -y --default-toolchain 1.31.0
     - $HOME/.cargo/bin/rustup target add i686-unknown-freebsd
   amd64_test_script:
     - . $HOME/.cargo/env

.travis.yml

@@ -18,71 +18,71 @@ matrix:
     # week.  Additionally they're moved to the front of the line to get them in
     # the Travis OS X build queue first.
     - env: TARGET="aarch64-apple-ios;armv7-apple-ios;armv7s-apple-ios;i386-apple-ios;x86_64-apple-ios" DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
       os: osx
 
     # Mac builds
     # These are also moved to be first because they wait in a long queue with
     # Travis
     - env: TARGET=i686-apple-darwin
-      rust: 1.27.0
+      rust: 1.31.0
       os: osx
     - env: TARGET=x86_64-apple-darwin
-      rust: 1.27.0
+      rust: 1.31.0
       os: osx
 
     # Android
     - env: TARGET=aarch64-linux-android DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=arm-linux-androideabi DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=armv7-linux-androideabi DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=i686-linux-android DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=x86_64-linux-android DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
 
     # Linux
     - env: TARGET=aarch64-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=arm-unknown-linux-gnueabi
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=arm-unknown-linux-musleabi DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=armv7-unknown-linux-gnueabihf
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=i686-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=i686-unknown-linux-musl
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=mips-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=mips64-unknown-linux-gnuabi64
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=mips64el-unknown-linux-gnuabi64
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=mipsel-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=powerpc-unknown-linux-gnu DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=powerpc64-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=powerpc64le-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=s390x-unknown-linux-gnu DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=x86_64-unknown-linux-gnu
-      rust: 1.27.0
+      rust: 1.31.0
     - env: TARGET=x86_64-unknown-linux-musl
-      rust: 1.27.0
+      rust: 1.31.0
 
     # *BSD
     # FreeBSD i686 and x86_64 use Cirrus instead of Travis
     # - env: TARGET=i686-unknown-freebsd DISABLE_TESTS=1
     # - env: TARGET=x86_64-unknown-freebsd DISABLE_TESTS=1
     - env: TARGET=x86_64-unknown-netbsd DISABLE_TESTS=1
-      rust: 1.27.0
+      rust: 1.31.0
 
     # Make sure stable is always working too
     - env: TARGET=x86_64-unknown-linux-gnu

CHANGELOG.md

@@ -17,7 +17,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 - Support for `ifaddrs` now present when building for Android.
   ([#1077](https://github.com/nix-rust/nix/pull/1077))
-- Minimum supported Rust version is now 1.27.0
+- Minimum supported Rust version is now 1.31.0
   ([#1035](https://github.com/nix-rust/nix/pull/1035))
   ([#1095](https://github.com/nix-rust/nix/pull/1095))
 - Now functions `statfs()` and `fstatfs()` return result with `Statfs` wrapper

README.md

@@ -83,7 +83,7 @@ Tier 2:
 
 ## Usage
 
-`nix` requires Rust 1.27.0 or newer.
+`nix` requires Rust 1.31.0 or newer.
 
 To use `nix`, first add this to your `Cargo.toml`: