[INFO] cloning repository https://github.com/samhclark/color_finder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samhclark/color_finder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamhclark%2Fcolor_finder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamhclark%2Fcolor_finder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a5c106ad1e6ccdec5adf1a41de3d3b8fa087cad
[INFO] checking samhclark/color_finder against try#04ea1e1f1a12cfa912c228ca278237d92d0bb6df for pr-148477-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamhclark%2Fcolor_finder" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/samhclark/color_finder
[INFO] finished tweaking git repo https://github.com/samhclark/color_finder
[INFO] tweaked toml for git repo https://github.com/samhclark/color_finder written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/samhclark/color_finder on toolchain 04ea1e1f1a12cfa912c228ca278237d92d0bb6df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/samhclark/color_finder 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" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9edc9b6ca485b08c163361962786622c6eed89e6cf2e4c9b083a8ba53020133b
[INFO] running `Command { std: "docker" "start" "-a" "9edc9b6ca485b08c163361962786622c6eed89e6cf2e4c9b083a8ba53020133b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9edc9b6ca485b08c163361962786622c6eed89e6cf2e4c9b083a8ba53020133b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9edc9b6ca485b08c163361962786622c6eed89e6cf2e4c9b083a8ba53020133b", kill_on_drop: false }`
[INFO] [stdout] 9edc9b6ca485b08c163361962786622c6eed89e6cf2e4c9b083a8ba53020133b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca3471005b4061df06d09b9053546bed321344822807921b0af2368fa2c5c7a5
[INFO] running `Command { std: "docker" "start" "-a" "ca3471005b4061df06d09b9053546bed321344822807921b0af2368fa2c5c7a5", kill_on_drop: false }`
[INFO] [stderr]     Checking color_finder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `contrast_against_primary`
[INFO] [stdout]   --> src/main.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 let contrast_against_primary = contrast(&color_under_test, &primary);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contrast_against_primary`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lightness`
[INFO] [stdout]   --> src/main.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let lightness = lightness(&color_under_test);
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lightness`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contrast_against_primary`
[INFO] [stdout]   --> src/main.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 let contrast_against_primary = contrast(&color_under_test, &primary);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contrast_against_primary`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lightness`
[INFO] [stdout]   --> src/main.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let lightness = lightness(&color_under_test);
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lightness`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "ca3471005b4061df06d09b9053546bed321344822807921b0af2368fa2c5c7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3471005b4061df06d09b9053546bed321344822807921b0af2368fa2c5c7a5", kill_on_drop: false }`
[INFO] [stdout] ca3471005b4061df06d09b9053546bed321344822807921b0af2368fa2c5c7a5