[INFO] fetching crate rcom 0.2.0...
[INFO] testing rcom-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rcom 0.2.0 into /workspace/builds/worker-104/source
[INFO] validating manifest of crates.io crate rcom 0.2.0 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 rcom 0.2.0
[INFO] finished tweaking crates.io crate rcom 0.2.0
[INFO] tweaked toml for crates.io crate rcom 0.2.0 written to /workspace/builds/worker-104/source/Cargo.toml
[INFO] crate crates.io crate rcom 0.2.0 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-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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] 417f6d4f924b0be0e496c5421d04ecc5788cca9baeb3622bbe7ca98792dae0f3
[INFO] running `Command { std: "docker" "start" "-a" "417f6d4f924b0be0e496c5421d04ecc5788cca9baeb3622bbe7ca98792dae0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "417f6d4f924b0be0e496c5421d04ecc5788cca9baeb3622bbe7ca98792dae0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "417f6d4f924b0be0e496c5421d04ecc5788cca9baeb3622bbe7ca98792dae0f3", kill_on_drop: false }`
[INFO] [stdout] 417f6d4f924b0be0e496c5421d04ecc5788cca9baeb3622bbe7ca98792dae0f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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] eb457cb1931a3fd0d5338c95ac6efe271f964a9a5a6ac45a4812c8e452b22e32
[INFO] running `Command { std: "docker" "start" "-a" "eb457cb1931a3fd0d5338c95ac6efe271f964a9a5a6ac45a4812c8e452b22e32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling ioctl-rs v0.1.6
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling serial v0.4.0
[INFO] [stderr]    Compiling rcom v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.81s
[INFO] running `Command { std: "docker" "inspect" "eb457cb1931a3fd0d5338c95ac6efe271f964a9a5a6ac45a4812c8e452b22e32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb457cb1931a3fd0d5338c95ac6efe271f964a9a5a6ac45a4812c8e452b22e32", kill_on_drop: false }`
[INFO] [stdout] eb457cb1931a3fd0d5338c95ac6efe271f964a9a5a6ac45a4812c8e452b22e32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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] b47c719470c8019533a34af5e18610b0227c2ccb78de1eb1bd8b2b5f9fd97767
[INFO] running `Command { std: "docker" "start" "-a" "b47c719470c8019533a34af5e18610b0227c2ccb78de1eb1bd8b2b5f9fd97767", kill_on_drop: false }`
[INFO] [stderr]    Compiling rcom v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "b47c719470c8019533a34af5e18610b0227c2ccb78de1eb1bd8b2b5f9fd97767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b47c719470c8019533a34af5e18610b0227c2ccb78de1eb1bd8b2b5f9fd97767", kill_on_drop: false }`
[INFO] [stdout] b47c719470c8019533a34af5e18610b0227c2ccb78de1eb1bd8b2b5f9fd97767
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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] c0fdd7d5897c490f4e41c7591c26c0ec3bcfc54df1c2211309126bf5fab31d7b
[INFO] running `Command { std: "docker" "start" "-a" "c0fdd7d5897c490f4e41c7591c26c0ec3bcfc54df1c2211309126bf5fab31d7b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rcom-6a6e5b3532058344)
[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" "c0fdd7d5897c490f4e41c7591c26c0ec3bcfc54df1c2211309126bf5fab31d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0fdd7d5897c490f4e41c7591c26c0ec3bcfc54df1c2211309126bf5fab31d7b", kill_on_drop: false }`
[INFO] [stdout] c0fdd7d5897c490f4e41c7591c26c0ec3bcfc54df1c2211309126bf5fab31d7b