[INFO] fetching crate mithrust 0.0.1...
[INFO] testing mithrust-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mithrust 0.0.1 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate mithrust 0.0.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mithrust 0.0.1
[INFO] finished tweaking crates.io crate mithrust 0.0.1
[INFO] tweaked toml for crates.io crate mithrust 0.0.1 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 610e2537f6ec6d20c9d3faf8d82b3899816a58dd708d04c6bf84ccc41d6f6236
[INFO] running `Command { std: "docker" "start" "-a" "610e2537f6ec6d20c9d3faf8d82b3899816a58dd708d04c6bf84ccc41d6f6236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "610e2537f6ec6d20c9d3faf8d82b3899816a58dd708d04c6bf84ccc41d6f6236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "610e2537f6ec6d20c9d3faf8d82b3899816a58dd708d04c6bf84ccc41d6f6236", kill_on_drop: false }`
[INFO] [stdout] 610e2537f6ec6d20c9d3faf8d82b3899816a58dd708d04c6bf84ccc41d6f6236
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc9fb442ae684e4dee265d139d0ae25dd3639b8ea1f51569a8ecdd64c17b18e0
[INFO] running `Command { std: "docker" "start" "-a" "cc9fb442ae684e4dee265d139d0ae25dd3639b8ea1f51569a8ecdd64c17b18e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling mithrust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "cc9fb442ae684e4dee265d139d0ae25dd3639b8ea1f51569a8ecdd64c17b18e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc9fb442ae684e4dee265d139d0ae25dd3639b8ea1f51569a8ecdd64c17b18e0", kill_on_drop: false }`
[INFO] [stdout] cc9fb442ae684e4dee265d139d0ae25dd3639b8ea1f51569a8ecdd64c17b18e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd5722ecf6bd992ca90a9dd39c4abc983075737c0cab32dada41cb148e8b6a83
[INFO] running `Command { std: "docker" "start" "-a" "fd5722ecf6bd992ca90a9dd39c4abc983075737c0cab32dada41cb148e8b6a83", kill_on_drop: false }`
[INFO] [stderr]    Compiling mithrust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "fd5722ecf6bd992ca90a9dd39c4abc983075737c0cab32dada41cb148e8b6a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5722ecf6bd992ca90a9dd39c4abc983075737c0cab32dada41cb148e8b6a83", kill_on_drop: false }`
[INFO] [stdout] fd5722ecf6bd992ca90a9dd39c4abc983075737c0cab32dada41cb148e8b6a83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 455347c07fb0cb860ad586d8b52d67ef228423170dc5850e15c2d4f259cc393d
[INFO] running `Command { std: "docker" "start" "-a" "455347c07fb0cb860ad586d8b52d67ef228423170dc5850e15c2d4f259cc393d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mithrust-2f5cff397adc8165)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... 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 mithrust
[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] running `Command { std: "docker" "inspect" "455347c07fb0cb860ad586d8b52d67ef228423170dc5850e15c2d4f259cc393d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455347c07fb0cb860ad586d8b52d67ef228423170dc5850e15c2d4f259cc393d", kill_on_drop: false }`
[INFO] [stdout] 455347c07fb0cb860ad586d8b52d67ef228423170dc5850e15c2d4f259cc393d