[INFO] fetching crate contrast 0.1.0...
[INFO] testing contrast-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate contrast 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate contrast 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 381eb6db74af859099e0b6a4dccd7dfc1c505b16333b0da8d668652f4581cb44
[INFO] running `Command { std: "docker" "start" "-a" "381eb6db74af859099e0b6a4dccd7dfc1c505b16333b0da8d668652f4581cb44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "381eb6db74af859099e0b6a4dccd7dfc1c505b16333b0da8d668652f4581cb44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381eb6db74af859099e0b6a4dccd7dfc1c505b16333b0da8d668652f4581cb44", kill_on_drop: false }`
[INFO] [stdout] 381eb6db74af859099e0b6a4dccd7dfc1c505b16333b0da8d668652f4581cb44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 371f3d74427f8197ba6fad95e117f1886a407eff0bbbdb83cb20edf0a0b9a4e9
[INFO] running `Command { std: "docker" "start" "-a" "371f3d74427f8197ba6fad95e117f1886a407eff0bbbdb83cb20edf0a0b9a4e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bytemuck v1.9.1
[INFO] [stderr]    Compiling rgb v0.8.32
[INFO] [stderr]    Compiling contrast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "371f3d74427f8197ba6fad95e117f1886a407eff0bbbdb83cb20edf0a0b9a4e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "371f3d74427f8197ba6fad95e117f1886a407eff0bbbdb83cb20edf0a0b9a4e9", kill_on_drop: false }`
[INFO] [stdout] 371f3d74427f8197ba6fad95e117f1886a407eff0bbbdb83cb20edf0a0b9a4e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce450e3653179d004ce8115307d9690f7ea1f8f102a1c7a6c3a60f0a4911c1e2
[INFO] running `Command { std: "docker" "start" "-a" "ce450e3653179d004ce8115307d9690f7ea1f8f102a1c7a6c3a60f0a4911c1e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling contrast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/contrast-228a32a6b41e6052)
[INFO] running `Command { std: "docker" "inspect" "ce450e3653179d004ce8115307d9690f7ea1f8f102a1c7a6c3a60f0a4911c1e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce450e3653179d004ce8115307d9690f7ea1f8f102a1c7a6c3a60f0a4911c1e2", kill_on_drop: false }`
[INFO] [stdout] ce450e3653179d004ce8115307d9690f7ea1f8f102a1c7a6c3a60f0a4911c1e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6a94199ecc6a8079ec7e9f3bae1feebcff648b43d7475d11c95afec84b21f268
[INFO] running `Command { std: "docker" "start" "-a" "6a94199ecc6a8079ec7e9f3bae1feebcff648b43d7475d11c95afec84b21f268", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/contrast-228a32a6b41e6052)
[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 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6a94199ecc6a8079ec7e9f3bae1feebcff648b43d7475d11c95afec84b21f268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a94199ecc6a8079ec7e9f3bae1feebcff648b43d7475d11c95afec84b21f268", kill_on_drop: false }`
[INFO] [stdout] 6a94199ecc6a8079ec7e9f3bae1feebcff648b43d7475d11c95afec84b21f268