[INFO] fetching crate concurrency 4.20.1...
[INFO] testing concurrency-4.20.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate concurrency 4.20.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate concurrency 4.20.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-3/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" "+beta-2021-09-08" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e889be366ab23099e9d2b83da7c74dd20af918ef934bf19e0a7c9ac04440fe93
[INFO] running `Command { std: "docker" "start" "-a" "e889be366ab23099e9d2b83da7c74dd20af918ef934bf19e0a7c9ac04440fe93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e889be366ab23099e9d2b83da7c74dd20af918ef934bf19e0a7c9ac04440fe93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e889be366ab23099e9d2b83da7c74dd20af918ef934bf19e0a7c9ac04440fe93", kill_on_drop: false }`
[INFO] [stdout] e889be366ab23099e9d2b83da7c74dd20af918ef934bf19e0a7c9ac04440fe93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3740e14e03abce2d5f1674c8f1df056156b0ca3ab3a6f2331d495f4d0d137c41
[INFO] running `Command { std: "docker" "start" "-a" "3740e14e03abce2d5f1674c8f1df056156b0ca3ab3a6f2331d495f4d0d137c41", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency v4.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "3740e14e03abce2d5f1674c8f1df056156b0ca3ab3a6f2331d495f4d0d137c41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3740e14e03abce2d5f1674c8f1df056156b0ca3ab3a6f2331d495f4d0d137c41", kill_on_drop: false }`
[INFO] [stdout] 3740e14e03abce2d5f1674c8f1df056156b0ca3ab3a6f2331d495f4d0d137c41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a05cfeb538edfb8d0c7d21a2426d694d1cee5c1457dd6c0c2e3de7a00c5729e9
[INFO] running `Command { std: "docker" "start" "-a" "a05cfeb538edfb8d0c7d21a2426d694d1cee5c1457dd6c0c2e3de7a00c5729e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency v4.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "a05cfeb538edfb8d0c7d21a2426d694d1cee5c1457dd6c0c2e3de7a00c5729e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a05cfeb538edfb8d0c7d21a2426d694d1cee5c1457dd6c0c2e3de7a00c5729e9", kill_on_drop: false }`
[INFO] [stdout] a05cfeb538edfb8d0c7d21a2426d694d1cee5c1457dd6c0c2e3de7a00c5729e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fea1458d791fe169cc3dc684612a6624a1e7a11f17964342cc4759026f62a6d7
[INFO] running `Command { std: "docker" "start" "-a" "fea1458d791fe169cc3dc684612a6624a1e7a11f17964342cc4759026f62a6d7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/concurrency-9880822ad8928af8)
[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" "fea1458d791fe169cc3dc684612a6624a1e7a11f17964342cc4759026f62a6d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea1458d791fe169cc3dc684612a6624a1e7a11f17964342cc4759026f62a6d7", kill_on_drop: false }`
[INFO] [stdout] fea1458d791fe169cc3dc684612a6624a1e7a11f17964342cc4759026f62a6d7