[INFO] fetching crate mutants 0.0.3...
[INFO] testing mutants-0.0.3 against 1.59.0 for beta-1.60-1
[INFO] extracting crate mutants 0.0.3 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate mutants 0.0.3 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mutants 0.0.3
[INFO] finished tweaking crates.io crate mutants 0.0.3
[INFO] tweaked toml for crates.io crate mutants 0.0.3 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72b5085ede43bfa33bc3daff9b90fb1dd93ac283f3d438f158b31becdc111dd2
[INFO] running `Command { std: "docker" "start" "-a" "72b5085ede43bfa33bc3daff9b90fb1dd93ac283f3d438f158b31becdc111dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72b5085ede43bfa33bc3daff9b90fb1dd93ac283f3d438f158b31becdc111dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72b5085ede43bfa33bc3daff9b90fb1dd93ac283f3d438f158b31becdc111dd2", kill_on_drop: false }`
[INFO] [stdout] 72b5085ede43bfa33bc3daff9b90fb1dd93ac283f3d438f158b31becdc111dd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 883891d309aef665a5a5861196a1c1c7c504af0d90270f6a127c0d1cc623a405
[INFO] running `Command { std: "docker" "start" "-a" "883891d309aef665a5a5861196a1c1c7c504af0d90270f6a127c0d1cc623a405", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mutants v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "883891d309aef665a5a5861196a1c1c7c504af0d90270f6a127c0d1cc623a405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883891d309aef665a5a5861196a1c1c7c504af0d90270f6a127c0d1cc623a405", kill_on_drop: false }`
[INFO] [stdout] 883891d309aef665a5a5861196a1c1c7c504af0d90270f6a127c0d1cc623a405
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d9b701b6a6344eb686780fcd12d153ec0a83f0d19f9fd03ca7dd90b393f3c6c
[INFO] running `Command { std: "docker" "start" "-a" "5d9b701b6a6344eb686780fcd12d153ec0a83f0d19f9fd03ca7dd90b393f3c6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutants v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "5d9b701b6a6344eb686780fcd12d153ec0a83f0d19f9fd03ca7dd90b393f3c6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d9b701b6a6344eb686780fcd12d153ec0a83f0d19f9fd03ca7dd90b393f3c6c", kill_on_drop: false }`
[INFO] [stdout] 5d9b701b6a6344eb686780fcd12d153ec0a83f0d19f9fd03ca7dd90b393f3c6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f8732ad4a67fb23510f12e5df440728d8361919b0dfce1f2992da93ed94cece
[INFO] running `Command { std: "docker" "start" "-a" "2f8732ad4a67fb23510f12e5df440728d8361919b0dfce1f2992da93ed94cece", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mutants-e5812ec9342ad04f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutants
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - skip (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2f8732ad4a67fb23510f12e5df440728d8361919b0dfce1f2992da93ed94cece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f8732ad4a67fb23510f12e5df440728d8361919b0dfce1f2992da93ed94cece", kill_on_drop: false }`
[INFO] [stdout] 2f8732ad4a67fb23510f12e5df440728d8361919b0dfce1f2992da93ed94cece