[INFO] fetching crate mill 0.1.0...
[INFO] testing mill-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mill 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate mill 0.1.0 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 mill 0.1.0
[INFO] finished tweaking crates.io crate mill 0.1.0
[INFO] tweaked toml for crates.io crate mill 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate mill 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mill_core v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 9845a0b9dca0ec74fe37c9ac2b7acb0ad9df6bc8c95192ebd0844f780e125302
[INFO] running `Command { std: "docker" "start" "-a" "9845a0b9dca0ec74fe37c9ac2b7acb0ad9df6bc8c95192ebd0844f780e125302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9845a0b9dca0ec74fe37c9ac2b7acb0ad9df6bc8c95192ebd0844f780e125302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9845a0b9dca0ec74fe37c9ac2b7acb0ad9df6bc8c95192ebd0844f780e125302", kill_on_drop: false }`
[INFO] [stdout] 9845a0b9dca0ec74fe37c9ac2b7acb0ad9df6bc8c95192ebd0844f780e125302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 108c6b10f35a7bb5284373f109bb1606796f351bd1d698db37610aa40b64d801
[INFO] running `Command { std: "docker" "start" "-a" "108c6b10f35a7bb5284373f109bb1606796f351bd1d698db37610aa40b64d801", kill_on_drop: false }`
[INFO] [stderr]    Compiling mill_core v0.1.0
[INFO] [stderr]    Compiling mill v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "108c6b10f35a7bb5284373f109bb1606796f351bd1d698db37610aa40b64d801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108c6b10f35a7bb5284373f109bb1606796f351bd1d698db37610aa40b64d801", kill_on_drop: false }`
[INFO] [stdout] 108c6b10f35a7bb5284373f109bb1606796f351bd1d698db37610aa40b64d801
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 3d02cf05938007b40cfc8f4910f34e681424b9f260c2d63049e6e5d15f11bc51
[INFO] running `Command { std: "docker" "start" "-a" "3d02cf05938007b40cfc8f4910f34e681424b9f260c2d63049e6e5d15f11bc51", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mill v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "3d02cf05938007b40cfc8f4910f34e681424b9f260c2d63049e6e5d15f11bc51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d02cf05938007b40cfc8f4910f34e681424b9f260c2d63049e6e5d15f11bc51", kill_on_drop: false }`
[INFO] [stdout] 3d02cf05938007b40cfc8f4910f34e681424b9f260c2d63049e6e5d15f11bc51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 4a170f1842d597e8c0adbf71cc892fc3309919e54f59184d2bf726899ed140ed
[INFO] running `Command { std: "docker" "start" "-a" "4a170f1842d597e8c0adbf71cc892fc3309919e54f59184d2bf726899ed140ed", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mill-adf310f29a040ab3)
[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" "4a170f1842d597e8c0adbf71cc892fc3309919e54f59184d2bf726899ed140ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a170f1842d597e8c0adbf71cc892fc3309919e54f59184d2bf726899ed140ed", kill_on_drop: false }`
[INFO] [stdout] 4a170f1842d597e8c0adbf71cc892fc3309919e54f59184d2bf726899ed140ed