[INFO] fetching crate base256 0.2.0...
[INFO] testing base256-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate base256 0.2.0 into /workspace/builds/worker-67/source
[INFO] validating manifest of crates.io crate base256 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 base256 0.2.0
[INFO] finished tweaking crates.io crate base256 0.2.0
[INFO] tweaked toml for crates.io crate base256 0.2.0 written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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] c419245b80d8fa43714fb9e21c2283092f5b1290393b7bbc6c83d9811fdcb1df
[INFO] running `Command { std: "docker" "start" "-a" "c419245b80d8fa43714fb9e21c2283092f5b1290393b7bbc6c83d9811fdcb1df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c419245b80d8fa43714fb9e21c2283092f5b1290393b7bbc6c83d9811fdcb1df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c419245b80d8fa43714fb9e21c2283092f5b1290393b7bbc6c83d9811fdcb1df", kill_on_drop: false }`
[INFO] [stdout] c419245b80d8fa43714fb9e21c2283092f5b1290393b7bbc6c83d9811fdcb1df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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] 8b41cdf8ba64b8bfcb91c8b6d9e7fb4e2ec4feb6aaba33ea2d602755f72ab1c2
[INFO] running `Command { std: "docker" "start" "-a" "8b41cdf8ba64b8bfcb91c8b6d9e7fb4e2ec4feb6aaba33ea2d602755f72ab1c2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling base256 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.29.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.10s
[INFO] running `Command { std: "docker" "inspect" "8b41cdf8ba64b8bfcb91c8b6d9e7fb4e2ec4feb6aaba33ea2d602755f72ab1c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b41cdf8ba64b8bfcb91c8b6d9e7fb4e2ec4feb6aaba33ea2d602755f72ab1c2", kill_on_drop: false }`
[INFO] [stdout] 8b41cdf8ba64b8bfcb91c8b6d9e7fb4e2ec4feb6aaba33ea2d602755f72ab1c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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] 7f82c50d758b98e442e15fd8221fb7b3fda9bc54c6402c9fa41afc5b6a154850
[INFO] running `Command { std: "docker" "start" "-a" "7f82c50d758b98e442e15fd8221fb7b3fda9bc54c6402c9fa41afc5b6a154850", kill_on_drop: false }`
[INFO] [stderr]    Compiling base256 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "7f82c50d758b98e442e15fd8221fb7b3fda9bc54c6402c9fa41afc5b6a154850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f82c50d758b98e442e15fd8221fb7b3fda9bc54c6402c9fa41afc5b6a154850", kill_on_drop: false }`
[INFO] [stdout] 7f82c50d758b98e442e15fd8221fb7b3fda9bc54c6402c9fa41afc5b6a154850
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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] c0ef2eb1fc4fbe3992f8cfd9192facb9249ffe16cb7edecf9c67f135abd4ace7
[INFO] running `Command { std: "docker" "start" "-a" "c0ef2eb1fc4fbe3992f8cfd9192facb9249ffe16cb7edecf9c67f135abd4ace7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lastresort-63901cff2eb466b1)
[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" "c0ef2eb1fc4fbe3992f8cfd9192facb9249ffe16cb7edecf9c67f135abd4ace7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0ef2eb1fc4fbe3992f8cfd9192facb9249ffe16cb7edecf9c67f135abd4ace7", kill_on_drop: false }`
[INFO] [stdout] c0ef2eb1fc4fbe3992f8cfd9192facb9249ffe16cb7edecf9c67f135abd4ace7