[INFO] fetching crate waitcell 0.4.0...
[INFO] testing waitcell-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate waitcell 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate waitcell 0.4.0 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 waitcell 0.4.0
[INFO] finished tweaking crates.io crate waitcell 0.4.0
[INFO] tweaked toml for crates.io crate waitcell 0.4.0 written to /workspace/builds/worker-8/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 88b1e4a7edc3e2b1ab8a7b5f58827044a54836fc68ffd8e422cdbf2b080aa37a
[INFO] running `Command { std: "docker" "start" "-a" "88b1e4a7edc3e2b1ab8a7b5f58827044a54836fc68ffd8e422cdbf2b080aa37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88b1e4a7edc3e2b1ab8a7b5f58827044a54836fc68ffd8e422cdbf2b080aa37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88b1e4a7edc3e2b1ab8a7b5f58827044a54836fc68ffd8e422cdbf2b080aa37a", kill_on_drop: false }`
[INFO] [stdout] 88b1e4a7edc3e2b1ab8a7b5f58827044a54836fc68ffd8e422cdbf2b080aa37a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] d037d285048c2236794b1848a94a1effc9736c3b4e90c2d93531ac17d2c387a6
[INFO] running `Command { std: "docker" "start" "-a" "d037d285048c2236794b1848a94a1effc9736c3b4e90c2d93531ac17d2c387a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling waitcell v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "d037d285048c2236794b1848a94a1effc9736c3b4e90c2d93531ac17d2c387a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d037d285048c2236794b1848a94a1effc9736c3b4e90c2d93531ac17d2c387a6", kill_on_drop: false }`
[INFO] [stdout] d037d285048c2236794b1848a94a1effc9736c3b4e90c2d93531ac17d2c387a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] ae057762b2ea2bf4701f27f5505c5f64b7951c8434a27408fec93f76dc4bb13d
[INFO] running `Command { std: "docker" "start" "-a" "ae057762b2ea2bf4701f27f5505c5f64b7951c8434a27408fec93f76dc4bb13d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling waitcell v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "ae057762b2ea2bf4701f27f5505c5f64b7951c8434a27408fec93f76dc4bb13d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae057762b2ea2bf4701f27f5505c5f64b7951c8434a27408fec93f76dc4bb13d", kill_on_drop: false }`
[INFO] [stdout] ae057762b2ea2bf4701f27f5505c5f64b7951c8434a27408fec93f76dc4bb13d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 73b5a2054a71f592c389711a88f6784852a858ee61f767a73cba359cefa043f3
[INFO] running `Command { std: "docker" "start" "-a" "73b5a2054a71f592c389711a88f6784852a858ee61f767a73cba359cefa043f3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/waitcell-ef7caf93150565cf)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::init_try_get ... ok
[INFO] [stdout] test tests::init_twice ... ok
[INFO] [stdout] test tests::uninit_init ... ok
[INFO] [stdout] test tests::uninit_try_get ... ok
[INFO] [stdout] test tests::stress ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests waitcell
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "73b5a2054a71f592c389711a88f6784852a858ee61f767a73cba359cefa043f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73b5a2054a71f592c389711a88f6784852a858ee61f767a73cba359cefa043f3", kill_on_drop: false }`
[INFO] [stdout] 73b5a2054a71f592c389711a88f6784852a858ee61f767a73cba359cefa043f3