[INFO] fetching crate futures-workpool 0.0.0...
[INFO] testing futures-workpool-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate futures-workpool 0.0.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate futures-workpool 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 futures-workpool 0.0.0
[INFO] finished tweaking crates.io crate futures-workpool 0.0.0
[INFO] tweaked toml for crates.io crate futures-workpool 0.0.0 written to /workspace/builds/worker-36/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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 72e687146a9a9149a18f353f764390b66b94b7f77252f5db6eef8edd2e050bb6
[INFO] running `Command { std: "docker" "start" "-a" "72e687146a9a9149a18f353f764390b66b94b7f77252f5db6eef8edd2e050bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72e687146a9a9149a18f353f764390b66b94b7f77252f5db6eef8edd2e050bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72e687146a9a9149a18f353f764390b66b94b7f77252f5db6eef8edd2e050bb6", kill_on_drop: false }`
[INFO] [stdout] 72e687146a9a9149a18f353f764390b66b94b7f77252f5db6eef8edd2e050bb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 251930d16c0d862bc7caa4b4490180300731d9817f6f86629502ee07487eee26
[INFO] running `Command { std: "docker" "start" "-a" "251930d16c0d862bc7caa4b4490180300731d9817f6f86629502ee07487eee26", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-workpool v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "251930d16c0d862bc7caa4b4490180300731d9817f6f86629502ee07487eee26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "251930d16c0d862bc7caa4b4490180300731d9817f6f86629502ee07487eee26", kill_on_drop: false }`
[INFO] [stdout] 251930d16c0d862bc7caa4b4490180300731d9817f6f86629502ee07487eee26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 2cd6479e47db3fc00e8fca07319d8bfdfb5b440bb3f12743979de32faade3b31
[INFO] running `Command { std: "docker" "start" "-a" "2cd6479e47db3fc00e8fca07319d8bfdfb5b440bb3f12743979de32faade3b31", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-workpool v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "2cd6479e47db3fc00e8fca07319d8bfdfb5b440bb3f12743979de32faade3b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd6479e47db3fc00e8fca07319d8bfdfb5b440bb3f12743979de32faade3b31", kill_on_drop: false }`
[INFO] [stdout] 2cd6479e47db3fc00e8fca07319d8bfdfb5b440bb3f12743979de32faade3b31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 34328b6b8022f02c96148de42f542b0041f89dc16a9ec74e20b774f0e665a26c
[INFO] running `Command { std: "docker" "start" "-a" "34328b6b8022f02c96148de42f542b0041f89dc16a9ec74e20b774f0e665a26c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/futures_workpool-3669289f837726a4)
[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 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures-workpool
[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" "34328b6b8022f02c96148de42f542b0041f89dc16a9ec74e20b774f0e665a26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34328b6b8022f02c96148de42f542b0041f89dc16a9ec74e20b774f0e665a26c", kill_on_drop: false }`
[INFO] [stdout] 34328b6b8022f02c96148de42f542b0041f89dc16a9ec74e20b774f0e665a26c