[INFO] fetching crate booster 0.0.1...
[INFO] testing booster-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate booster 0.0.1 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate booster 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 booster 0.0.1
[INFO] finished tweaking crates.io crate booster 0.0.1
[INFO] tweaked toml for crates.io crate booster 0.0.1 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] crate crates.io crate booster 0.0.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] 27987f1f5ce983461e6e75aa766d976c3bc5e3b8cb943b5166c561ff33583846
[INFO] running `Command { std: "docker" "start" "-a" "27987f1f5ce983461e6e75aa766d976c3bc5e3b8cb943b5166c561ff33583846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27987f1f5ce983461e6e75aa766d976c3bc5e3b8cb943b5166c561ff33583846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27987f1f5ce983461e6e75aa766d976c3bc5e3b8cb943b5166c561ff33583846", kill_on_drop: false }`
[INFO] [stdout] 27987f1f5ce983461e6e75aa766d976c3bc5e3b8cb943b5166c561ff33583846
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] 5bb1da31c8b7df0cdb5c64b7f7653e7021288082c0aa16deabc8b23e251a2521
[INFO] running `Command { std: "docker" "start" "-a" "5bb1da31c8b7df0cdb5c64b7f7653e7021288082c0aa16deabc8b23e251a2521", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling booster v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "5bb1da31c8b7df0cdb5c64b7f7653e7021288082c0aa16deabc8b23e251a2521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bb1da31c8b7df0cdb5c64b7f7653e7021288082c0aa16deabc8b23e251a2521", kill_on_drop: false }`
[INFO] [stdout] 5bb1da31c8b7df0cdb5c64b7f7653e7021288082c0aa16deabc8b23e251a2521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] e35eaa663b57e0bd8e8901d8e8117b4ec5997b3d5dd30c07e3f92b766b103fee
[INFO] running `Command { std: "docker" "start" "-a" "e35eaa663b57e0bd8e8901d8e8117b4ec5997b3d5dd30c07e3f92b766b103fee", kill_on_drop: false }`
[INFO] [stderr]    Compiling booster v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "e35eaa663b57e0bd8e8901d8e8117b4ec5997b3d5dd30c07e3f92b766b103fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35eaa663b57e0bd8e8901d8e8117b4ec5997b3d5dd30c07e3f92b766b103fee", kill_on_drop: false }`
[INFO] [stdout] e35eaa663b57e0bd8e8901d8e8117b4ec5997b3d5dd30c07e3f92b766b103fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] a09af9848cfbd844dc96bbf1e1f3de9639b1ab1b5b821bbc0e8ce016cd7f7ca5
[INFO] running `Command { std: "docker" "start" "-a" "a09af9848cfbd844dc96bbf1e1f3de9639b1ab1b5b821bbc0e8ce016cd7f7ca5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/booster-ef3979b6f1774dcd)
[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" "a09af9848cfbd844dc96bbf1e1f3de9639b1ab1b5b821bbc0e8ce016cd7f7ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09af9848cfbd844dc96bbf1e1f3de9639b1ab1b5b821bbc0e8ce016cd7f7ca5", kill_on_drop: false }`
[INFO] [stdout] a09af9848cfbd844dc96bbf1e1f3de9639b1ab1b5b821bbc0e8ce016cd7f7ca5