[INFO] fetching crate perceptron 0.1.1...
[INFO] building perceptron-0.1.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate perceptron 0.1.1 into /workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate perceptron 0.1.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1b427c14fce8e831aab2ed28cd7980159492ef780889cddd5d8c2f02ad2a96b
[INFO] running `Command { std: "docker" "start" "-a" "f1b427c14fce8e831aab2ed28cd7980159492ef780889cddd5d8c2f02ad2a96b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1b427c14fce8e831aab2ed28cd7980159492ef780889cddd5d8c2f02ad2a96b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b427c14fce8e831aab2ed28cd7980159492ef780889cddd5d8c2f02ad2a96b", kill_on_drop: false }`
[INFO] [stdout] f1b427c14fce8e831aab2ed28cd7980159492ef780889cddd5d8c2f02ad2a96b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f08ef37ff570ca4df9ee9fa2fb41ead74ab5549d447ff1f6eee4a2dd7cb71ba
[INFO] running `Command { std: "docker" "start" "-a" "6f08ef37ff570ca4df9ee9fa2fb41ead74ab5549d447ff1f6eee4a2dd7cb71ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde 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 8.53s
[INFO] running `Command { std: "docker" "inspect" "6f08ef37ff570ca4df9ee9fa2fb41ead74ab5549d447ff1f6eee4a2dd7cb71ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f08ef37ff570ca4df9ee9fa2fb41ead74ab5549d447ff1f6eee4a2dd7cb71ba", kill_on_drop: false }`
[INFO] [stdout] 6f08ef37ff570ca4df9ee9fa2fb41ead74ab5549d447ff1f6eee4a2dd7cb71ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da3e8c422628c1b45a2be85ee0d766cd0330fb5bbe047cb3a3453b27c4e6d678
[INFO] running `Command { std: "docker" "start" "-a" "da3e8c422628c1b45a2be85ee0d766cd0330fb5bbe047cb3a3453b27c4e6d678", 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 0.66s
[INFO] running `Command { std: "docker" "inspect" "da3e8c422628c1b45a2be85ee0d766cd0330fb5bbe047cb3a3453b27c4e6d678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da3e8c422628c1b45a2be85ee0d766cd0330fb5bbe047cb3a3453b27c4e6d678", kill_on_drop: false }`
[INFO] [stdout] da3e8c422628c1b45a2be85ee0d766cd0330fb5bbe047cb3a3453b27c4e6d678