Fix min dependency versions. Update MSRV to 1.64.

Also includes a work-around for a buggy `format_args!` macro found in
rustc 1.67 and 1.68.

Resolves #2670.

contrib/db_pools/codegen/Cargo.toml

@@ -8,7 +8,7 @@ readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [lib]
 proc-macro = true

contrib/db_pools/lib/Cargo.toml

@@ -8,7 +8,7 @@ readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [package.metadata.docs.rs]
 all-features = true

contrib/dyn_templates/Cargo.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 keywords = ["rocket", "framework", "templates", "templating", "engine"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [features]
 tera = ["tera_"]

contrib/sync_db_pools/codegen/Cargo.toml

@@ -8,7 +8,7 @@ readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [lib]
 proc-macro = true

contrib/sync_db_pools/lib/Cargo.toml

@@ -8,7 +8,7 @@ readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [features]
 diesel_sqlite_pool = ["diesel/sqlite", "diesel/r2d2"]
@@ -31,7 +31,7 @@ r2d2_postgres = { version = "0.18", optional = true }
 rusqlite = { version = "0.29.0", optional = true }
 r2d2_sqlite = { version = "0.22.0", optional = true }
 
-memcache = { version = "0.15", optional = true }
+memcache = { version = "0.15.2", optional = true }
 r2d2-memcache = { version = "0.6", optional = true }
 
 [dependencies.rocket_sync_db_pools_codegen]

contrib/ws/Cargo.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 keywords = ["rocket", "web", "framework", "websocket"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [features]
 default = ["tungstenite"]

contrib/ws/src/websocket.rs

@@ -245,8 +245,8 @@ impl<'r, S> IoHandler for MessageStream<'r, S>
 {
     async fn io(self: Pin<Box<Self>>, io: IoStream) -> io::Result<()> {
         let (mut sink, source) = DuplexStream::new(io, self.ws.config).await.split();
-        let handler = Pin::into_inner(self).handler;
-        let mut stream = std::pin::pin!((handler)(source));
+        let stream = (Pin::into_inner(self).handler)(source);
+        rocket::tokio::pin!(stream);
         while let Some(msg) = stream.next().await {
             let result = match msg {
                 Ok(msg) => sink.send(msg).await,

core/codegen/Cargo.toml

@@ -10,7 +10,7 @@ readme = "../../README.md"
 keywords = ["rocket", "web", "framework", "code", "generation"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [lib]
 proc-macro = true
@@ -19,7 +19,7 @@ proc-macro = true
 indexmap = "2"
 quote = "1.0"
 syn = { version = "2.0", features = ["full", "visit", "visit-mut", "extra-traits"] }
-proc-macro2 = "1.0.27"
+proc-macro2 = "1.0.60"
 devise = "0.4"
 rocket_http = { version = "0.5.0", path = "../http/" }
 unicode-xid = "0.2"

core/http/Cargo.toml

@@ -13,7 +13,7 @@ keywords = ["rocket", "web", "framework", "http"]
 license = "MIT OR Apache-2.0"
 categories = ["web-programming"]
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [features]
 default = []
@@ -38,7 +38,7 @@ log = "0.4"
 ref-cast = "1.0"
 uncased = "0.9.6"
 either = "1"
-pear = "0.2.3"
+pear = "0.2.8"
 pin-project-lite = "0.2"
 memchr = "2"
 stable-pattern = "0.1"

core/lib/Cargo.toml

@@ -14,7 +14,7 @@ license = "MIT OR Apache-2.0"
 build = "build.rs"
 categories = ["web-programming::http-server"]
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -46,7 +46,7 @@ binascii = "0.1"
 ref-cast = "1.0"
 atomic = "0.5"
 parking_lot = "0.12"
-ubyte = {version = "0.10", features = ["serde"] }
+ubyte = {version = "0.10.2", features = ["serde"] }
 serde = { version = "1.0", features = ["derive"] }
 figment = { version = "0.10.6", features = ["toml", "env"] }
 rand = "0.8"
@@ -56,7 +56,7 @@ indexmap = { version = "2", features = ["serde"] }
 tempfile = "3"
 async-trait = "0.1.43"
 async-stream = "0.3.2"
-multer = { version = "2", features = ["tokio-io"] }
+multer = { version = "3.0.0", features = ["tokio-io"] }
 tokio-stream = { version = "0.1.6", features = ["signal", "time"] }
 state = "0.6"
 

core/lib/build.rs

@@ -1,5 +1,11 @@
 fn main() {
-    if let Some(true) = version_check::is_feature_flaggable() {
-        println!("cargo:rustc-cfg=nightly");
+    if let Some((version, channel, _)) = version_check::triple() {
+        if channel.supports_features() {
+            println!("cargo:rustc-cfg=nightly");
+        }
+
+        if version.at_least("1.67") && version.at_most("1.68.2") {
+            println!("cargo:rustc-cfg=broken_fmt");
+        }
     }
 }

core/lib/src/server.rs

@@ -73,7 +73,9 @@ async fn hyper_service_fn(
     // sends the response metadata (and a body channel) prior.
     let (tx, rx) = oneshot::channel();
 
-    debug!("Received request: {:#?}", hyp_req);
+    #[cfg(not(broken_fmt))]
+    debug!("received request: {:#?}", hyp_req);
+
     tokio::spawn(async move {
         // We move the request next, so get the upgrade future now.
         let pending_upgrade = hyper::upgrade::on(&mut hyp_req);
@@ -160,7 +162,9 @@ impl Rocket<Orbit> {
         let hyp_response = hyp_res.body(hyp_body)
             .map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))?;
 
+        #[cfg(not(broken_fmt))]
         debug!("sending response: {:#?}", hyp_response);
+
         tx.send(hyp_response).map_err(|_| {
             let msg = "client disconnect before response started";
             io::Error::new(io::ErrorKind::BrokenPipe, msg)