[INFO] fetching crate scum 0.1.0...
[INFO] testing scum-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate scum 0.1.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate scum 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 scum 0.1.0
[INFO] finished tweaking crates.io crate scum 0.1.0
[INFO] tweaked toml for crates.io crate scum 0.1.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate crates.io crate scum 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 134108809a806651e178ce627f8c02107226cdd3fb3df858ad5b1845d69b4e8f
[INFO] running `Command { std: "docker" "start" "-a" "134108809a806651e178ce627f8c02107226cdd3fb3df858ad5b1845d69b4e8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "134108809a806651e178ce627f8c02107226cdd3fb3df858ad5b1845d69b4e8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134108809a806651e178ce627f8c02107226cdd3fb3df858ad5b1845d69b4e8f", kill_on_drop: false }`
[INFO] [stdout] 134108809a806651e178ce627f8c02107226cdd3fb3df858ad5b1845d69b4e8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] b52665af582d2f452991cd040bb4d9f9eb43b1b30243f35d1593ad446b0ec804
[INFO] running `Command { std: "docker" "start" "-a" "b52665af582d2f452991cd040bb4d9f9eb43b1b30243f35d1593ad446b0ec804", kill_on_drop: false }`
[INFO] [stderr]    Compiling scum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "b52665af582d2f452991cd040bb4d9f9eb43b1b30243f35d1593ad446b0ec804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b52665af582d2f452991cd040bb4d9f9eb43b1b30243f35d1593ad446b0ec804", kill_on_drop: false }`
[INFO] [stdout] b52665af582d2f452991cd040bb4d9f9eb43b1b30243f35d1593ad446b0ec804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 442d29632fbfc8b6a7a6103e7efa8761eb9d007f0b05b4f6c8d50de9e41c404f
[INFO] running `Command { std: "docker" "start" "-a" "442d29632fbfc8b6a7a6103e7efa8761eb9d007f0b05b4f6c8d50de9e41c404f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling scum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "442d29632fbfc8b6a7a6103e7efa8761eb9d007f0b05b4f6c8d50de9e41c404f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "442d29632fbfc8b6a7a6103e7efa8761eb9d007f0b05b4f6c8d50de9e41c404f", kill_on_drop: false }`
[INFO] [stdout] 442d29632fbfc8b6a7a6103e7efa8761eb9d007f0b05b4f6c8d50de9e41c404f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 3279e4bfe11c01c016a9543741a5b6e26bd330199b6516d08c38cbd70ecaf58a
[INFO] running `Command { std: "docker" "start" "-a" "3279e4bfe11c01c016a9543741a5b6e26bd330199b6516d08c38cbd70ecaf58a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/scum-79f8e36b55709011)
[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" "3279e4bfe11c01c016a9543741a5b6e26bd330199b6516d08c38cbd70ecaf58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3279e4bfe11c01c016a9543741a5b6e26bd330199b6516d08c38cbd70ecaf58a", kill_on_drop: false }`
[INFO] [stdout] 3279e4bfe11c01c016a9543741a5b6e26bd330199b6516d08c38cbd70ecaf58a