[INFO] fetching crate skirt 0.0.0...
[INFO] testing skirt-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate skirt 0.0.0 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate skirt 0.0.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skirt 0.0.0
[INFO] finished tweaking crates.io crate skirt 0.0.0
[INFO] tweaked toml for crates.io crate skirt 0.0.0 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate crates.io crate skirt 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0ea671069272a98c056a9b48e9d82dada73d7b8723d92a9226203521e9b6d1d
[INFO] running `Command { std: "docker" "start" "-a" "f0ea671069272a98c056a9b48e9d82dada73d7b8723d92a9226203521e9b6d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0ea671069272a98c056a9b48e9d82dada73d7b8723d92a9226203521e9b6d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0ea671069272a98c056a9b48e9d82dada73d7b8723d92a9226203521e9b6d1d", kill_on_drop: false }`
[INFO] [stdout] f0ea671069272a98c056a9b48e9d82dada73d7b8723d92a9226203521e9b6d1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa958681187c9ae7f3b4653ffbe8522b8064d17d1dbc8c956dac147fe4912edd
[INFO] running `Command { std: "docker" "start" "-a" "aa958681187c9ae7f3b4653ffbe8522b8064d17d1dbc8c956dac147fe4912edd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling skirt v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "aa958681187c9ae7f3b4653ffbe8522b8064d17d1dbc8c956dac147fe4912edd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa958681187c9ae7f3b4653ffbe8522b8064d17d1dbc8c956dac147fe4912edd", kill_on_drop: false }`
[INFO] [stdout] aa958681187c9ae7f3b4653ffbe8522b8064d17d1dbc8c956dac147fe4912edd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c3a5655979b8db605d7a988a457b2a657c64526d9351c2ea06f124ac3fc410
[INFO] running `Command { std: "docker" "start" "-a" "42c3a5655979b8db605d7a988a457b2a657c64526d9351c2ea06f124ac3fc410", kill_on_drop: false }`
[INFO] [stderr]    Compiling skirt v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "42c3a5655979b8db605d7a988a457b2a657c64526d9351c2ea06f124ac3fc410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c3a5655979b8db605d7a988a457b2a657c64526d9351c2ea06f124ac3fc410", kill_on_drop: false }`
[INFO] [stdout] 42c3a5655979b8db605d7a988a457b2a657c64526d9351c2ea06f124ac3fc410
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 28604920f5f3b4e787e742934c8a495432bba93e46ff43c1b4bb9a3aff4e6d32
[INFO] running `Command { std: "docker" "start" "-a" "28604920f5f3b4e787e742934c8a495432bba93e46ff43c1b4bb9a3aff4e6d32", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/skirt-4c0d4a8c1261f56c)
[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" "28604920f5f3b4e787e742934c8a495432bba93e46ff43c1b4bb9a3aff4e6d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28604920f5f3b4e787e742934c8a495432bba93e46ff43c1b4bb9a3aff4e6d32", kill_on_drop: false }`
[INFO] [stdout] 28604920f5f3b4e787e742934c8a495432bba93e46ff43c1b4bb9a3aff4e6d32