[INFO] fetching crate kct_helper 0.3.1...
[INFO] testing kct_helper-0.3.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate kct_helper 0.3.1 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate kct_helper 0.3.1 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 kct_helper 0.3.1
[INFO] finished tweaking crates.io crate kct_helper 0.3.1
[INFO] tweaked toml for crates.io crate kct_helper 0.3.1 written to /workspace/builds/worker-39/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-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 5cc6c4711ae8013e59e3ef0c9602a10da21ca9dc2f3601e574bd990d90cb6ac9
[INFO] running `Command { std: "docker" "start" "-a" "5cc6c4711ae8013e59e3ef0c9602a10da21ca9dc2f3601e574bd990d90cb6ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cc6c4711ae8013e59e3ef0c9602a10da21ca9dc2f3601e574bd990d90cb6ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cc6c4711ae8013e59e3ef0c9602a10da21ca9dc2f3601e574bd990d90cb6ac9", kill_on_drop: false }`
[INFO] [stdout] 5cc6c4711ae8013e59e3ef0c9602a10da21ca9dc2f3601e574bd990d90cb6ac9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] ccfeeddba8a9b464608c0b6b15741b0e6e3ea778ce8dca51f1b029ac7abcac59
[INFO] running `Command { std: "docker" "start" "-a" "ccfeeddba8a9b464608c0b6b15741b0e6e3ea778ce8dca51f1b029ac7abcac59", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling kct_helper v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.29s
[INFO] running `Command { std: "docker" "inspect" "ccfeeddba8a9b464608c0b6b15741b0e6e3ea778ce8dca51f1b029ac7abcac59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccfeeddba8a9b464608c0b6b15741b0e6e3ea778ce8dca51f1b029ac7abcac59", kill_on_drop: false }`
[INFO] [stdout] ccfeeddba8a9b464608c0b6b15741b0e6e3ea778ce8dca51f1b029ac7abcac59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 9c0aa1a51ffa0919df6fbca0a6f7c959a4bb310d109a4bb929b0a48dd2407101
[INFO] running `Command { std: "docker" "start" "-a" "9c0aa1a51ffa0919df6fbca0a6f7c959a4bb310d109a4bb929b0a48dd2407101", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling kct_helper v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "9c0aa1a51ffa0919df6fbca0a6f7c959a4bb310d109a4bb929b0a48dd2407101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c0aa1a51ffa0919df6fbca0a6f7c959a4bb310d109a4bb929b0a48dd2407101", kill_on_drop: false }`
[INFO] [stdout] 9c0aa1a51ffa0919df6fbca0a6f7c959a4bb310d109a4bb929b0a48dd2407101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 392528a3adf4720c31f7ec98938ff336ec8696d802ebb134f85c0fc398e9a573
[INFO] running `Command { std: "docker" "start" "-a" "392528a3adf4720c31f7ec98938ff336ec8696d802ebb134f85c0fc398e9a573", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kct_helper-392e0473a334e2a4)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kct_helper
[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] [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" "392528a3adf4720c31f7ec98938ff336ec8696d802ebb134f85c0fc398e9a573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "392528a3adf4720c31f7ec98938ff336ec8696d802ebb134f85c0fc398e9a573", kill_on_drop: false }`
[INFO] [stdout] 392528a3adf4720c31f7ec98938ff336ec8696d802ebb134f85c0fc398e9a573