[INFO] cloning repository https://github.com/IgorPietrzak/P-colourings-of-Knots
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IgorPietrzak/P-colourings-of-Knots" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorPietrzak%2FP-colourings-of-Knots", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorPietrzak%2FP-colourings-of-Knots'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e3dd5c34a3929fed838c9577fcb8b445799020a
[INFO] checking IgorPietrzak/P-colourings-of-Knots against master#cf79d034aa3d8f396d407aafce6f1ccd818e710e for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorPietrzak%2FP-colourings-of-Knots" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/IgorPietrzak/P-colourings-of-Knots
[INFO] finished tweaking git repo https://github.com/IgorPietrzak/P-colourings-of-Knots
[INFO] tweaked toml for git repo https://github.com/IgorPietrzak/P-colourings-of-Knots written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/IgorPietrzak/P-colourings-of-Knots on toolchain cf79d034aa3d8f396d407aafce6f1ccd818e710e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf79d034aa3d8f396d407aafce6f1ccd818e710e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/IgorPietrzak/P-colourings-of-Knots 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" "+cf79d034aa3d8f396d407aafce6f1ccd818e710e" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cf79d034aa3d8f396d407aafce6f1ccd818e710e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11cf9e5488871e390d9fe8e6d0d80eb9ed6cb4fc1381f455754c66735ac576cb
[INFO] running `Command { std: "docker" "start" "-a" "11cf9e5488871e390d9fe8e6d0d80eb9ed6cb4fc1381f455754c66735ac576cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11cf9e5488871e390d9fe8e6d0d80eb9ed6cb4fc1381f455754c66735ac576cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11cf9e5488871e390d9fe8e6d0d80eb9ed6cb4fc1381f455754c66735ac576cb", kill_on_drop: false }`
[INFO] [stdout] 11cf9e5488871e390d9fe8e6d0d80eb9ed6cb4fc1381f455754c66735ac576cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cf79d034aa3d8f396d407aafce6f1ccd818e710e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8895b86bb0e74a32c83cb73d0cee16af67a6754a4ed63992ef053530608776f3
[INFO] running `Command { std: "docker" "start" "-a" "8895b86bb0e74a32c83cb73d0cee16af67a6754a4ed63992ef053530608776f3", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking knots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]  --> src/colourings.rs:4:41
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let combos: Vec<_> = (0..n).map(|_| (0..*p)).multi_cartesian_product().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] 4 -     let combos: Vec<_> = (0..n).map(|_| (0..*p)).multi_cartesian_product().collect();
[INFO] [stdout] 4 +     let combos: Vec<_> = (0..n).map(|_| 0..*p ).multi_cartesian_product().collect();
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]  --> src/colourings.rs:4:41
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let combos: Vec<_> = (0..n).map(|_| (0..*p)).multi_cartesian_product().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] 4 -     let combos: Vec<_> = (0..n).map(|_| (0..*p)).multi_cartesian_product().collect();
[INFO] [stdout] 4 +     let combos: Vec<_> = (0..n).map(|_| 0..*p ).multi_cartesian_product().collect();
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "8895b86bb0e74a32c83cb73d0cee16af67a6754a4ed63992ef053530608776f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8895b86bb0e74a32c83cb73d0cee16af67a6754a4ed63992ef053530608776f3", kill_on_drop: false }`
[INFO] [stdout] 8895b86bb0e74a32c83cb73d0cee16af67a6754a4ed63992ef053530608776f3
