[INFO] fetching crate suspend_fn_proc_macro 0.1.0...
[INFO] checking suspend_fn_proc_macro-0.1.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate suspend_fn_proc_macro 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate suspend_fn_proc_macro 0.1.0
[INFO] finished tweaking crates.io crate suspend_fn_proc_macro 0.1.0
[INFO] tweaked toml for crates.io crate suspend_fn_proc_macro 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate suspend_fn_proc_macro 0.1.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 141d28028de83e349bd4472a80f76fee3268c8d611dfa332d0845dc7cad52f14
[INFO] running `Command { std: "docker" "start" "-a" "141d28028de83e349bd4472a80f76fee3268c8d611dfa332d0845dc7cad52f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "141d28028de83e349bd4472a80f76fee3268c8d611dfa332d0845dc7cad52f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141d28028de83e349bd4472a80f76fee3268c8d611dfa332d0845dc7cad52f14", kill_on_drop: false }`
[INFO] [stdout] 141d28028de83e349bd4472a80f76fee3268c8d611dfa332d0845dc7cad52f14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 446afb837198a0026141345476cac10a0d6bc19536dea2fc1571942a352f6a9e
[INFO] running `Command { std: "docker" "start" "-a" "446afb837198a0026141345476cac10a0d6bc19536dea2fc1571942a352f6a9e", kill_on_drop: false }`
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking proc-macro2 v1.0.101
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]     Checking suspend_fn_proc_macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/expr.rs:231:26
[INFO] [stdout]     |
[INFO] [stdout] 231 |         for (_, expr) in &mut self.guard {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 231 -         for (_, expr) in &mut self.guard {
[INFO] [stdout] 231 +         while let Some((_, expr)) = &mut self.guard {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 231 -         for (_, expr) in &mut self.guard {
[INFO] [stdout] 231 +         if let Some((_, expr)) = &mut self.guard {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/stmt.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for (_, expr) in &mut self.init {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 17 -         for (_, expr) in &mut self.init {
[INFO] [stdout] 17 +         while let Some((_, expr)) = &mut self.init {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 17 -         for (_, expr) in &mut self.init {
[INFO] [stdout] 17 +         if let Some((_, expr)) = &mut self.init {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/expr.rs:231:26
[INFO] [stdout]     |
[INFO] [stdout] 231 |         for (_, expr) in &mut self.guard {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 231 -         for (_, expr) in &mut self.guard {
[INFO] [stdout] 231 +         while let Some((_, expr)) = &mut self.guard {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 231 -         for (_, expr) in &mut self.guard {
[INFO] [stdout] 231 +         if let Some((_, expr)) = &mut self.guard {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/stmt.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for (_, expr) in &mut self.init {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 17 -         for (_, expr) in &mut self.init {
[INFO] [stdout] 17 +         while let Some((_, expr)) = &mut self.init {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 17 -         for (_, expr) in &mut self.init {
[INFO] [stdout] 17 +         if let Some((_, expr)) = &mut self.init {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `Command { std: "docker" "inspect" "446afb837198a0026141345476cac10a0d6bc19536dea2fc1571942a352f6a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "446afb837198a0026141345476cac10a0d6bc19536dea2fc1571942a352f6a9e", kill_on_drop: false }`
[INFO] [stdout] 446afb837198a0026141345476cac10a0d6bc19536dea2fc1571942a352f6a9e