[INFO] fetching crate perceptron 0.1.1...
[INFO] building perceptron-0.1.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate perceptron 0.1.1 into /workspace/builds/worker-1-tc2/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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate perceptron 0.1.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f596b32dc23c0dca0fec85c317876ca11453ccc24f2f207cd7756c7fa5b93666
[INFO] running `Command { std: "docker" "start" "-a" "f596b32dc23c0dca0fec85c317876ca11453ccc24f2f207cd7756c7fa5b93666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f596b32dc23c0dca0fec85c317876ca11453ccc24f2f207cd7756c7fa5b93666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f596b32dc23c0dca0fec85c317876ca11453ccc24f2f207cd7756c7fa5b93666", kill_on_drop: false }`
[INFO] [stdout] f596b32dc23c0dca0fec85c317876ca11453ccc24f2f207cd7756c7fa5b93666
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b573e057c1d59d6325238e13c0a53ffd6039a0a2909c280fc180fe6979cd0213
[INFO] running `Command { std: "docker" "start" "-a" "b573e057c1d59d6325238e13c0a53ffd6039a0a2909c280fc180fe6979cd0213", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 5.71s
[INFO] running `Command { std: "docker" "inspect" "b573e057c1d59d6325238e13c0a53ffd6039a0a2909c280fc180fe6979cd0213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b573e057c1d59d6325238e13c0a53ffd6039a0a2909c280fc180fe6979cd0213", kill_on_drop: false }`
[INFO] [stdout] b573e057c1d59d6325238e13c0a53ffd6039a0a2909c280fc180fe6979cd0213
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66267fd49366d0f62c07980580467117930127d8735ccfa4470e6f8308fa0a66
[INFO] running `Command { std: "docker" "start" "-a" "66267fd49366d0f62c07980580467117930127d8735ccfa4470e6f8308fa0a66", kill_on_drop: false }`
[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)]` (part of `#[warn(unused)]`) 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]    Compiling 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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "66267fd49366d0f62c07980580467117930127d8735ccfa4470e6f8308fa0a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66267fd49366d0f62c07980580467117930127d8735ccfa4470e6f8308fa0a66", kill_on_drop: false }`
[INFO] [stdout] 66267fd49366d0f62c07980580467117930127d8735ccfa4470e6f8308fa0a66