[INFO] fetching crate perceptron 0.1.1...
[INFO] checking perceptron-0.1.1 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate perceptron 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate perceptron 0.1.1
[INFO] finished tweaking crates.io crate perceptron 0.1.1
[INFO] tweaked toml for crates.io crate perceptron 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate perceptron 0.1.1 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b886197649be3acdc437c10be7369e73793bd1fdbd525df3d764894231475bb0
[INFO] running `Command { std: "docker" "start" "-a" "b886197649be3acdc437c10be7369e73793bd1fdbd525df3d764894231475bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b886197649be3acdc437c10be7369e73793bd1fdbd525df3d764894231475bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b886197649be3acdc437c10be7369e73793bd1fdbd525df3d764894231475bb0", kill_on_drop: false }`
[INFO] [stdout] b886197649be3acdc437c10be7369e73793bd1fdbd525df3d764894231475bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee9c365b6e931703d2e833f0d109140c4752ed209903f3bdc575783b9ec4d851
[INFO] running `Command { std: "docker" "start" "-a" "ee9c365b6e931703d2e833f0d109140c4752ed209903f3bdc575783b9ec4d851", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_json v1.0.143
[INFO] [stderr]     Checking perceptron v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/lib.rs:69:60
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let temp: Vec<f32> = self.s_weights.iter().map(|w| (w / (self.n_examples as f32))).collect();
[INFO] [stdout]    |                                                            ^                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -         let temp: Vec<f32> = self.s_weights.iter().map(|w| (w / (self.n_examples as f32))).collect();
[INFO] [stdout] 69 +         let temp: Vec<f32> = self.s_weights.iter().map(|w| w / (self.n_examples as f32)).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/lib.rs:69:60
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let temp: Vec<f32> = self.s_weights.iter().map(|w| (w / (self.n_examples as f32))).collect();
[INFO] [stdout]    |                                                            ^                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -         let temp: Vec<f32> = self.s_weights.iter().map(|w| (w / (self.n_examples as f32))).collect();
[INFO] [stdout] 69 +         let temp: Vec<f32> = self.s_weights.iter().map(|w| w / (self.n_examples as f32)).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.44s
[INFO] running `Command { std: "docker" "inspect" "ee9c365b6e931703d2e833f0d109140c4752ed209903f3bdc575783b9ec4d851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee9c365b6e931703d2e833f0d109140c4752ed209903f3bdc575783b9ec4d851", kill_on_drop: false }`
[INFO] [stdout] ee9c365b6e931703d2e833f0d109140c4752ed209903f3bdc575783b9ec4d851