[INFO] fetching crate concurrency_toolkit 0.2.8...
[INFO] testing concurrency_toolkit-0.2.8 against 1.55.0 for beta-1.56-1
[INFO] extracting crate concurrency_toolkit 0.2.8 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate concurrency_toolkit 0.2.8 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 concurrency_toolkit 0.2.8
[INFO] finished tweaking crates.io crate concurrency_toolkit 0.2.8
[INFO] tweaked toml for crates.io crate concurrency_toolkit 0.2.8 written to /workspace/builds/worker-5/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]  Downloading crates ...
[INFO] [stderr]   Downloaded loom v0.5.1
[INFO] [stderr]   Downloaded maybe-async v0.2.6
[INFO] [stderr]   Downloaded generator v0.7.0
[INFO] [stderr]   Downloaded proc_macro_test v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 1fff9d038220b563da890b68fd392d9fdd85ed7a4171eb53916315badb434a86
[INFO] running `Command { std: "docker" "start" "-a" "1fff9d038220b563da890b68fd392d9fdd85ed7a4171eb53916315badb434a86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fff9d038220b563da890b68fd392d9fdd85ed7a4171eb53916315badb434a86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fff9d038220b563da890b68fd392d9fdd85ed7a4171eb53916315badb434a86", kill_on_drop: false }`
[INFO] [stdout] 1fff9d038220b563da890b68fd392d9fdd85ed7a4171eb53916315badb434a86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 2bb15b63b27c110924f5d8473142df722ae2034f6cfe294045005a9bf2726875
[INFO] running `Command { std: "docker" "start" "-a" "2bb15b63b27c110924f5d8473142df722ae2034f6cfe294045005a9bf2726875", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling proc_macro_test v0.1.5
[INFO] [stderr]    Compiling maybe-async v0.2.6
[INFO] [stderr]    Compiling concurrency_toolkit v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.56s
[INFO] running `Command { std: "docker" "inspect" "2bb15b63b27c110924f5d8473142df722ae2034f6cfe294045005a9bf2726875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb15b63b27c110924f5d8473142df722ae2034f6cfe294045005a9bf2726875", kill_on_drop: false }`
[INFO] [stdout] 2bb15b63b27c110924f5d8473142df722ae2034f6cfe294045005a9bf2726875
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 60fb54d65a2eb071284970dd308a9aababc27fe7251a64c72a5a9a7e16705aaa
[INFO] running `Command { std: "docker" "start" "-a" "60fb54d65a2eb071284970dd308a9aababc27fe7251a64c72a5a9a7e16705aaa", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency_toolkit v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "60fb54d65a2eb071284970dd308a9aababc27fe7251a64c72a5a9a7e16705aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60fb54d65a2eb071284970dd308a9aababc27fe7251a64c72a5a9a7e16705aaa", kill_on_drop: false }`
[INFO] [stdout] 60fb54d65a2eb071284970dd308a9aababc27fe7251a64c72a5a9a7e16705aaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] f671c154849a987a87ab3fc9e9edb2e2f8bf2dc5603e9f5b7b774f1fc1881cf6
[INFO] running `Command { std: "docker" "start" "-a" "f671c154849a987a87ab3fc9e9edb2e2f8bf2dc5603e9f5b7b774f1fc1881cf6", 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_toolkit-418d1527cfe08fd2)
[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] [stderr]      Running tests/atomic.rs (/opt/rustwide/target/debug/deps/atomic-f0584683f7881498)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/proc_macro_test.rs (/opt/rustwide/target/debug/deps/proc_macro_test-c8cd157c81af8f22)
[INFO] [stdout] test test_assert_store ... ok
[INFO] [stderr]      Running tests/sync.rs (/opt/rustwide/target/debug/deps/sync-546e53afe36a15ed)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/thread.rs (/opt/rustwide/target/debug/deps/thread-6e5e0b461626cfef)
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test f ... 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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_rwlock ... 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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concurrency_toolkit
[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" "f671c154849a987a87ab3fc9e9edb2e2f8bf2dc5603e9f5b7b774f1fc1881cf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f671c154849a987a87ab3fc9e9edb2e2f8bf2dc5603e9f5b7b774f1fc1881cf6", kill_on_drop: false }`
[INFO] [stdout] f671c154849a987a87ab3fc9e9edb2e2f8bf2dc5603e9f5b7b774f1fc1881cf6