[INFO] fetching crate simple_io 0.1.1...
[INFO] testing simple_io-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate simple_io 0.1.1 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate simple_io 0.1.1 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 simple_io 0.1.1
[INFO] finished tweaking crates.io crate simple_io 0.1.1
[INFO] tweaked toml for crates.io crate simple_io 0.1.1 written to /workspace/builds/worker-20/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] [stderr]     Blocking waiting for file lock on package cache
[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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] bcfb46ade8e75edb2cd4433fa6345685250e6398e623fb335c67939b20530c30
[INFO] running `Command { std: "docker" "start" "-a" "bcfb46ade8e75edb2cd4433fa6345685250e6398e623fb335c67939b20530c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcfb46ade8e75edb2cd4433fa6345685250e6398e623fb335c67939b20530c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcfb46ade8e75edb2cd4433fa6345685250e6398e623fb335c67939b20530c30", kill_on_drop: false }`
[INFO] [stdout] bcfb46ade8e75edb2cd4433fa6345685250e6398e623fb335c67939b20530c30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 99d53139bfad8b0ebcb980e00aae1509cd4e0c0caef3ed6bc63d4e9e9be151d8
[INFO] running `Command { std: "docker" "start" "-a" "99d53139bfad8b0ebcb980e00aae1509cd4e0c0caef3ed6bc63d4e9e9be151d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_io v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "99d53139bfad8b0ebcb980e00aae1509cd4e0c0caef3ed6bc63d4e9e9be151d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d53139bfad8b0ebcb980e00aae1509cd4e0c0caef3ed6bc63d4e9e9be151d8", kill_on_drop: false }`
[INFO] [stdout] 99d53139bfad8b0ebcb980e00aae1509cd4e0c0caef3ed6bc63d4e9e9be151d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] e08709bf8e95c50051ec074f03be5c037a39de4ac59696aec13da820c45fa048
[INFO] running `Command { std: "docker" "start" "-a" "e08709bf8e95c50051ec074f03be5c037a39de4ac59696aec13da820c45fa048", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_io v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "e08709bf8e95c50051ec074f03be5c037a39de4ac59696aec13da820c45fa048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e08709bf8e95c50051ec074f03be5c037a39de4ac59696aec13da820c45fa048", kill_on_drop: false }`
[INFO] [stdout] e08709bf8e95c50051ec074f03be5c037a39de4ac59696aec13da820c45fa048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 27b8298e72e0de3e53a6ef90713d70a9ef156a6ac6d063e21719a1311cb57cdd
[INFO] running `Command { std: "docker" "start" "-a" "27b8298e72e0de3e53a6ef90713d70a9ef156a6ac6d063e21719a1311cb57cdd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_io-aa4abdd403d36a3c)
[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] [stderr]    Doc-tests simple_io
[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" "27b8298e72e0de3e53a6ef90713d70a9ef156a6ac6d063e21719a1311cb57cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27b8298e72e0de3e53a6ef90713d70a9ef156a6ac6d063e21719a1311cb57cdd", kill_on_drop: false }`
[INFO] [stdout] 27b8298e72e0de3e53a6ef90713d70a9ef156a6ac6d063e21719a1311cb57cdd