[INFO] fetching crate one-shot-mutex 0.2.1...
[INFO] testing one-shot-mutex-0.2.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate one-shot-mutex 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate one-shot-mutex 0.2.1
[INFO] finished tweaking crates.io crate one-shot-mutex 0.2.1
[INFO] tweaked toml for crates.io crate one-shot-mutex 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate one-shot-mutex 0.2.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate one-shot-mutex 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 568e171a19e0db2d3c3361d24a8bc96f7ec9b85d9c8333d4869a445b3bc45b88
[INFO] running `Command { std: "docker" "start" "-a" "568e171a19e0db2d3c3361d24a8bc96f7ec9b85d9c8333d4869a445b3bc45b88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "568e171a19e0db2d3c3361d24a8bc96f7ec9b85d9c8333d4869a445b3bc45b88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "568e171a19e0db2d3c3361d24a8bc96f7ec9b85d9c8333d4869a445b3bc45b88", kill_on_drop: false }`
[INFO] [stdout] 568e171a19e0db2d3c3361d24a8bc96f7ec9b85d9c8333d4869a445b3bc45b88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b782160df94aafae9ffb00a43c2481c00f468a4cc4ab82726311bb0a1f750e6
[INFO] running `Command { std: "docker" "start" "-a" "4b782160df94aafae9ffb00a43c2481c00f468a4cc4ab82726311bb0a1f750e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling one-shot-mutex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "4b782160df94aafae9ffb00a43c2481c00f468a4cc4ab82726311bb0a1f750e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b782160df94aafae9ffb00a43c2481c00f468a4cc4ab82726311bb0a1f750e6", kill_on_drop: false }`
[INFO] [stdout] 4b782160df94aafae9ffb00a43c2481c00f468a4cc4ab82726311bb0a1f750e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1220b8f03f9b39a2d9b69bd3434f909169a6f25aaac22c828dd5f0c74120f470
[INFO] running `Command { std: "docker" "start" "-a" "1220b8f03f9b39a2d9b69bd3434f909169a6f25aaac22c828dd5f0c74120f470", kill_on_drop: false }`
[INFO] [stderr]    Compiling one-shot-mutex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "1220b8f03f9b39a2d9b69bd3434f909169a6f25aaac22c828dd5f0c74120f470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1220b8f03f9b39a2d9b69bd3434f909169a6f25aaac22c828dd5f0c74120f470", kill_on_drop: false }`
[INFO] [stdout] 1220b8f03f9b39a2d9b69bd3434f909169a6f25aaac22c828dd5f0c74120f470
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cff5df95d5b079d7b8cf516157b652d1d57409ef245ba3a9e9c0bf951ca1b5eb
[INFO] running `Command { std: "docker" "start" "-a" "cff5df95d5b079d7b8cf516157b652d1d57409ef245ba3a9e9c0bf951ca1b5eb", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/one_shot_mutex-97852ad60f29ceea)
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test sync::mutex::tests::lock ... ok
[INFO] [stdout] test sync::mutex::tests::try_lock ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_exclusive ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_shared ... ok
[INFO] [stdout] test sync::rwlock::tests::try_lock_shared ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_upgradable ... ok
[INFO] [stdout] test unsync::mutex::tests::lock ... ok
[INFO] [stdout] test unsync::mutex::tests::try_lock ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_shared ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_upgradable ... ok
[INFO] [stdout] test sync::rwlock::tests::try_lock_upgradable ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_exclusive ... ok
[INFO] [stdout] test unsync::rwlock::tests::try_lock_exclusive ... ok
[INFO] [stdout] test unsync::rwlock::tests::try_lock_shared ... ok
[INFO] [stdout] test unsync::rwlock::tests::try_lock_upgradable ... ok
[INFO] [stdout] test sync::rwlock::tests::try_lock_exclusive ... ok
[INFO] [stdout] test sync::mutex::tests::lock_panic - should panic ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_exclusive_panic - should panic ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_shared_panic - should panic ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_exclusive_shared_panic - should panic ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_upgradable_panic - should panic ... ok
[INFO] [stdout] test unsync::mutex::tests::lock_panic - should panic ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_exclusive_panic - should panic ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_shared_panic - should panic ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_upgradable_panic - should panic ... ok
[INFO] [stdout] test sync::rwlock::tests::lock_upgradable_write_panic - should panic ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_upgradable_write_panic - should panic ... ok
[INFO] [stdout] test unsync::rwlock::tests::upgrade_panic - should panic ... ok
[INFO] [stdout] test sync::rwlock::tests::upgrade_panic - should panic ... ok
[INFO] [stdout] test unsync::rwlock::tests::lock_exclusive_shared_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests one_shot_mutex
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/unsync/mutex.rs - unsync::mutex::RawOneShotMutex (line 20) ... ok
[INFO] [stdout] test src/sync/mutex.rs - sync::mutex::RawOneShotMutex (line 17) ... ok
[INFO] [stdout] test src/sync/rwlock.rs - sync::rwlock::RawOneShotRwLock (line 21) ... ok
[INFO] [stdout] test src/unsync/rwlock.rs - unsync::rwlock::RawOneShotRwLock (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cff5df95d5b079d7b8cf516157b652d1d57409ef245ba3a9e9c0bf951ca1b5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff5df95d5b079d7b8cf516157b652d1d57409ef245ba3a9e9c0bf951ca1b5eb", kill_on_drop: false }`
[INFO] [stdout] cff5df95d5b079d7b8cf516157b652d1d57409ef245ba3a9e9c0bf951ca1b5eb
