[INFO] fetching crate text_writer 0.1.11...
[INFO] testing text_writer-0.1.11 against 1.55.0 for beta-1.56-1
[INFO] extracting crate text_writer 0.1.11 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate text_writer 0.1.11 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 text_writer 0.1.11
[INFO] finished tweaking crates.io crate text_writer 0.1.11
[INFO] tweaked toml for crates.io crate text_writer 0.1.11 written to /workspace/builds/worker-74/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] [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-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 27d4d22fe7c973e3cdf785eae6598194f6a4df1f141ace568252d030cb748fc3
[INFO] running `Command { std: "docker" "start" "-a" "27d4d22fe7c973e3cdf785eae6598194f6a4df1f141ace568252d030cb748fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27d4d22fe7c973e3cdf785eae6598194f6a4df1f141ace568252d030cb748fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27d4d22fe7c973e3cdf785eae6598194f6a4df1f141ace568252d030cb748fc3", kill_on_drop: false }`
[INFO] [stdout] 27d4d22fe7c973e3cdf785eae6598194f6a4df1f141ace568252d030cb748fc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] ec4be999fb25d696c9bf421c0db9d6dc027241000b36cb2c1ca7e525b4027345
[INFO] running `Command { std: "docker" "start" "-a" "ec4be999fb25d696c9bf421c0db9d6dc027241000b36cb2c1ca7e525b4027345", kill_on_drop: false }`
[INFO] [stderr]    Compiling text_writer v0.1.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "ec4be999fb25d696c9bf421c0db9d6dc027241000b36cb2c1ca7e525b4027345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4be999fb25d696c9bf421c0db9d6dc027241000b36cb2c1ca7e525b4027345", kill_on_drop: false }`
[INFO] [stdout] ec4be999fb25d696c9bf421c0db9d6dc027241000b36cb2c1ca7e525b4027345
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] c5b500ba418ad8562c43534eb4c3cbef319b932d72ccca038595e919773a74a1
[INFO] running `Command { std: "docker" "start" "-a" "c5b500ba418ad8562c43534eb4c3cbef319b932d72ccca038595e919773a74a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling text_writer v0.1.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "c5b500ba418ad8562c43534eb4c3cbef319b932d72ccca038595e919773a74a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b500ba418ad8562c43534eb4c3cbef319b932d72ccca038595e919773a74a1", kill_on_drop: false }`
[INFO] [stdout] c5b500ba418ad8562c43534eb4c3cbef319b932d72ccca038595e919773a74a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 31c65a9b63d0e1c74332db67a736e2346d9e731c3b1a0c4f0f0e9075db279f69
[INFO] running `Command { std: "docker" "start" "-a" "31c65a9b63d0e1c74332db67a736e2346d9e731c3b1a0c4f0f0e9075db279f69", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/text_writer-e8b4c73b18145212)
[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" "31c65a9b63d0e1c74332db67a736e2346d9e731c3b1a0c4f0f0e9075db279f69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31c65a9b63d0e1c74332db67a736e2346d9e731c3b1a0c4f0f0e9075db279f69", kill_on_drop: false }`
[INFO] [stdout] 31c65a9b63d0e1c74332db67a736e2346d9e731c3b1a0c4f0f0e9075db279f69