[INFO] cloning repository https://github.com/ethanbarry/symmetria
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ethanbarry/symmetria" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fethanbarry%2Fsymmetria", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fethanbarry%2Fsymmetria'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dea95468f58837c885cc6a12fa40a4581d0f1bb3
[INFO] checking ethanbarry/symmetria against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fethanbarry%2Fsymmetria" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ethanbarry/symmetria
[INFO] finished tweaking git repo https://github.com/ethanbarry/symmetria
[INFO] tweaked toml for git repo https://github.com/ethanbarry/symmetria written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ethanbarry/symmetria on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ethanbarry/symmetria 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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e7073d1fa81129b2e5e9eb99a6fccfcb6ac5674c19b373f248999517c1e75e6
[INFO] running `Command { std: "docker" "start" "-a" "3e7073d1fa81129b2e5e9eb99a6fccfcb6ac5674c19b373f248999517c1e75e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e7073d1fa81129b2e5e9eb99a6fccfcb6ac5674c19b373f248999517c1e75e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e7073d1fa81129b2e5e9eb99a6fccfcb6ac5674c19b373f248999517c1e75e6", kill_on_drop: false }`
[INFO] [stdout] 3e7073d1fa81129b2e5e9eb99a6fccfcb6ac5674c19b373f248999517c1e75e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f1be9480cf51d47474a1d536f0c7a625cb8f22bbc7fec76bc0d693c28e1906f
[INFO] running `Command { std: "docker" "start" "-a" "5f1be9480cf51d47474a1d536f0c7a625cb8f22bbc7fec76bc0d693c28e1906f", kill_on_drop: false }`
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking symmetria v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/interpolation/lagrange.rs:30:37
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 .filter(|&(pos, _)| (pos != i))
[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] 30 -                 .filter(|&(pos, _)| (pos != i))
[INFO] [stdout] 30 +                 .filter(|&(pos, _)| pos != i)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/interpolation/lagrange.rs:30:37
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 .filter(|&(pos, _)| (pos != i))
[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] 30 -                 .filter(|&(pos, _)| (pos != i))
[INFO] [stdout] 30 +                 .filter(|&(pos, _)| pos != i)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "5f1be9480cf51d47474a1d536f0c7a625cb8f22bbc7fec76bc0d693c28e1906f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f1be9480cf51d47474a1d536f0c7a625cb8f22bbc7fec76bc0d693c28e1906f", kill_on_drop: false }`
[INFO] [stdout] 5f1be9480cf51d47474a1d536f0c7a625cb8f22bbc7fec76bc0d693c28e1906f