[INFO] fetching crate tracing-async 0.0.0...
[INFO] testing tracing-async-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate tracing-async 0.0.0 into /workspace/builds/worker-32/source
[INFO] validating manifest of crates.io crate tracing-async 0.0.0 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 tracing-async 0.0.0
[INFO] finished tweaking crates.io crate tracing-async 0.0.0
[INFO] tweaked toml for crates.io crate tracing-async 0.0.0 written to /workspace/builds/worker-32/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] bcd110e63eb41f70a546e275c14794a590299d42d77b664cf32d3e3a332fc2ec
[INFO] running `Command { std: "docker" "start" "-a" "bcd110e63eb41f70a546e275c14794a590299d42d77b664cf32d3e3a332fc2ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcd110e63eb41f70a546e275c14794a590299d42d77b664cf32d3e3a332fc2ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcd110e63eb41f70a546e275c14794a590299d42d77b664cf32d3e3a332fc2ec", kill_on_drop: false }`
[INFO] [stdout] bcd110e63eb41f70a546e275c14794a590299d42d77b664cf32d3e3a332fc2ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] fcc222dddb7e2b99aff9002221eb00e134b8a262e3bc5b39fe02f2408d6b2d24
[INFO] running `Command { std: "docker" "start" "-a" "fcc222dddb7e2b99aff9002221eb00e134b8a262e3bc5b39fe02f2408d6b2d24", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-async v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "fcc222dddb7e2b99aff9002221eb00e134b8a262e3bc5b39fe02f2408d6b2d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcc222dddb7e2b99aff9002221eb00e134b8a262e3bc5b39fe02f2408d6b2d24", kill_on_drop: false }`
[INFO] [stdout] fcc222dddb7e2b99aff9002221eb00e134b8a262e3bc5b39fe02f2408d6b2d24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] 1e13b393e049dca9713a84c18ae1c589ba465a5c584ff5bd7436b9f259153a3f
[INFO] running `Command { std: "docker" "start" "-a" "1e13b393e049dca9713a84c18ae1c589ba465a5c584ff5bd7436b9f259153a3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-async v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "1e13b393e049dca9713a84c18ae1c589ba465a5c584ff5bd7436b9f259153a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e13b393e049dca9713a84c18ae1c589ba465a5c584ff5bd7436b9f259153a3f", kill_on_drop: false }`
[INFO] [stdout] 1e13b393e049dca9713a84c18ae1c589ba465a5c584ff5bd7436b9f259153a3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] aa5769001d5d7d43345582ff0fc7e8c26d0dd97f426b4d54ee0b1ba2ccb531bf
[INFO] running `Command { std: "docker" "start" "-a" "aa5769001d5d7d43345582ff0fc7e8c26d0dd97f426b4d54ee0b1ba2ccb531bf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tracing_async-32644d4533e3023a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tracing-async
[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" "aa5769001d5d7d43345582ff0fc7e8c26d0dd97f426b4d54ee0b1ba2ccb531bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa5769001d5d7d43345582ff0fc7e8c26d0dd97f426b4d54ee0b1ba2ccb531bf", kill_on_drop: false }`
[INFO] [stdout] aa5769001d5d7d43345582ff0fc7e8c26d0dd97f426b4d54ee0b1ba2ccb531bf