[INFO] fetching crate cbored 0.4.3...
[INFO] checking cbored-0.4.3 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate cbored 0.4.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate cbored 0.4.3
[INFO] finished tweaking crates.io crate cbored 0.4.3
[INFO] tweaked toml for crates.io crate cbored 0.4.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cbored 0.4.3 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cbored 0.4.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4afb43473cff08ac156151b874a50b6796ac86a8c597d7cbbcba4cf258aa4318
[INFO] running `Command { std: "docker" "start" "-a" "4afb43473cff08ac156151b874a50b6796ac86a8c597d7cbbcba4cf258aa4318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4afb43473cff08ac156151b874a50b6796ac86a8c597d7cbbcba4cf258aa4318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4afb43473cff08ac156151b874a50b6796ac86a8c597d7cbbcba4cf258aa4318", kill_on_drop: false }`
[INFO] [stdout] 4afb43473cff08ac156151b874a50b6796ac86a8c597d7cbbcba4cf258aa4318
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f52dda2583d7b97cff8937e038be891522818b36c5a2ea694e2b98fc841e511
[INFO] running `Command { std: "docker" "start" "-a" "7f52dda2583d7b97cff8937e038be891522818b36c5a2ea694e2b98fc841e511", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.32
[INFO] [stderr]    Compiling cbored-derive v0.4.2
[INFO] [stderr]     Checking cbored v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/types/structure.rs:256:44
[INFO] [stdout]     |
[INFO] [stdout] 256 |         self.elements.iter().map(|(k, _v)| (k.reader()))
[INFO] [stdout]     |                                            ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 256 -         self.elements.iter().map(|(k, _v)| (k.reader()))
[INFO] [stdout] 256 +         self.elements.iter().map(|(k, _v)| k.reader())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/types/structure.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |         self.elements.iter().map(|(_k, v)| (v.reader()))
[INFO] [stdout]     |                                            ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 261 -         self.elements.iter().map(|(_k, v)| (v.reader()))
[INFO] [stdout] 261 +         self.elements.iter().map(|(_k, v)| v.reader())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/types/structure.rs:256:44
[INFO] [stdout]     |
[INFO] [stdout] 256 |         self.elements.iter().map(|(k, _v)| (k.reader()))
[INFO] [stdout]     |                                            ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 256 -         self.elements.iter().map(|(k, _v)| (k.reader()))
[INFO] [stdout] 256 +         self.elements.iter().map(|(k, _v)| k.reader())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/types/structure.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |         self.elements.iter().map(|(_k, v)| (v.reader()))
[INFO] [stdout]     |                                            ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 261 -         self.elements.iter().map(|(_k, v)| (v.reader()))
[INFO] [stdout] 261 +         self.elements.iter().map(|(_k, v)| v.reader())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.91s
[INFO] running `Command { std: "docker" "inspect" "7f52dda2583d7b97cff8937e038be891522818b36c5a2ea694e2b98fc841e511", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f52dda2583d7b97cff8937e038be891522818b36c5a2ea694e2b98fc841e511", kill_on_drop: false }`
[INFO] [stdout] 7f52dda2583d7b97cff8937e038be891522818b36c5a2ea694e2b98fc841e511