[INFO] fetching crate contrast 0.1.0...
[INFO] testing contrast-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate contrast 0.1.0 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate contrast 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate contrast 0.1.0
[INFO] finished tweaking crates.io crate contrast 0.1.0
[INFO] tweaked toml for crates.io crate contrast 0.1.0 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f9837264c3547e269dfcae79dc3f6874d00fba66081503c1c7523b4743ed8e2
[INFO] running `Command { std: "docker" "start" "-a" "8f9837264c3547e269dfcae79dc3f6874d00fba66081503c1c7523b4743ed8e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f9837264c3547e269dfcae79dc3f6874d00fba66081503c1c7523b4743ed8e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f9837264c3547e269dfcae79dc3f6874d00fba66081503c1c7523b4743ed8e2", kill_on_drop: false }`
[INFO] [stdout] 8f9837264c3547e269dfcae79dc3f6874d00fba66081503c1c7523b4743ed8e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e0d049a9bd212bf67427d02826d8fb95aba9ade21b22dde48469fd93df352a8
[INFO] running `Command { std: "docker" "start" "-a" "6e0d049a9bd212bf67427d02826d8fb95aba9ade21b22dde48469fd93df352a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytemuck v1.7.2
[INFO] [stderr]    Compiling rgb v0.8.27
[INFO] [stderr]    Compiling contrast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "6e0d049a9bd212bf67427d02826d8fb95aba9ade21b22dde48469fd93df352a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e0d049a9bd212bf67427d02826d8fb95aba9ade21b22dde48469fd93df352a8", kill_on_drop: false }`
[INFO] [stdout] 6e0d049a9bd212bf67427d02826d8fb95aba9ade21b22dde48469fd93df352a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be6516b9143d6109f0554dc9f0445b3311c60e43fab09a32ff4d9158a6237e2f
[INFO] running `Command { std: "docker" "start" "-a" "be6516b9143d6109f0554dc9f0445b3311c60e43fab09a32ff4d9158a6237e2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling contrast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "be6516b9143d6109f0554dc9f0445b3311c60e43fab09a32ff4d9158a6237e2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be6516b9143d6109f0554dc9f0445b3311c60e43fab09a32ff4d9158a6237e2f", kill_on_drop: false }`
[INFO] [stdout] be6516b9143d6109f0554dc9f0445b3311c60e43fab09a32ff4d9158a6237e2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fd926418993c3486a2ab75765d371f3f86dd97c5bcb9b47d91892ef166317694
[INFO] running `Command { std: "docker" "start" "-a" "fd926418993c3486a2ab75765d371f3f86dd97c5bcb9b47d91892ef166317694", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/contrast-17cc570521c48df2)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_contrast ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests contrast
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - contrast (line 34) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fd926418993c3486a2ab75765d371f3f86dd97c5bcb9b47d91892ef166317694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd926418993c3486a2ab75765d371f3f86dd97c5bcb9b47d91892ef166317694", kill_on_drop: false }`
[INFO] [stdout] fd926418993c3486a2ab75765d371f3f86dd97c5bcb9b47d91892ef166317694
