[INFO] fetching crate concurrency 4.20.1...
[INFO] testing concurrency-4.20.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate concurrency 4.20.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate concurrency 4.20.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concurrency 4.20.1
[INFO] finished tweaking crates.io crate concurrency 4.20.1
[INFO] tweaked toml for crates.io crate concurrency 4.20.1 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate concurrency 4.20.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408ae69246487478b76a49e495a210e51391b5b46bf4b2f6c3be5347a3d7e039
[INFO] running `Command { std: "docker" "start" "-a" "408ae69246487478b76a49e495a210e51391b5b46bf4b2f6c3be5347a3d7e039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408ae69246487478b76a49e495a210e51391b5b46bf4b2f6c3be5347a3d7e039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408ae69246487478b76a49e495a210e51391b5b46bf4b2f6c3be5347a3d7e039", kill_on_drop: false }`
[INFO] [stdout] 408ae69246487478b76a49e495a210e51391b5b46bf4b2f6c3be5347a3d7e039
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a6de80e50f35e0b9ad7023b8f3eefab424dc9052134f3041b0a1cbb2233cbc7
[INFO] running `Command { std: "docker" "start" "-a" "8a6de80e50f35e0b9ad7023b8f3eefab424dc9052134f3041b0a1cbb2233cbc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency v4.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "8a6de80e50f35e0b9ad7023b8f3eefab424dc9052134f3041b0a1cbb2233cbc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a6de80e50f35e0b9ad7023b8f3eefab424dc9052134f3041b0a1cbb2233cbc7", kill_on_drop: false }`
[INFO] [stdout] 8a6de80e50f35e0b9ad7023b8f3eefab424dc9052134f3041b0a1cbb2233cbc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebe68ced88fa3321edac23b6e48e27c007048492555f3a47e1e4d295c67a6fdc
[INFO] running `Command { std: "docker" "start" "-a" "ebe68ced88fa3321edac23b6e48e27c007048492555f3a47e1e4d295c67a6fdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency v4.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "ebe68ced88fa3321edac23b6e48e27c007048492555f3a47e1e4d295c67a6fdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebe68ced88fa3321edac23b6e48e27c007048492555f3a47e1e4d295c67a6fdc", kill_on_drop: false }`
[INFO] [stdout] ebe68ced88fa3321edac23b6e48e27c007048492555f3a47e1e4d295c67a6fdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0eacc2c96b0b420722071677e805bc9d36a3fbebc946d72bc30685c5c9593301
[INFO] running `Command { std: "docker" "start" "-a" "0eacc2c96b0b420722071677e805bc9d36a3fbebc946d72bc30685c5c9593301", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/concurrency-d091505bfaee9ce5)
[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" "0eacc2c96b0b420722071677e805bc9d36a3fbebc946d72bc30685c5c9593301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eacc2c96b0b420722071677e805bc9d36a3fbebc946d72bc30685c5c9593301", kill_on_drop: false }`
[INFO] [stdout] 0eacc2c96b0b420722071677e805bc9d36a3fbebc946d72bc30685c5c9593301
