[INFO] fetching crate mcslock 0.4.1...
[INFO] testing mcslock-0.4.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mcslock 0.4.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mcslock 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mcslock 0.4.1
[INFO] tweaked toml for crates.io crate mcslock 0.4.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcslock 0.4.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mcslock 0.4.1 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9e73c1bb9c861f3fbb0959c90dc867e135894211373c1aee3ae87b50fb9f543
[INFO] running `Command { std: "docker" "start" "-a" "d9e73c1bb9c861f3fbb0959c90dc867e135894211373c1aee3ae87b50fb9f543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9e73c1bb9c861f3fbb0959c90dc867e135894211373c1aee3ae87b50fb9f543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9e73c1bb9c861f3fbb0959c90dc867e135894211373c1aee3ae87b50fb9f543", kill_on_drop: false }`
[INFO] [stdout] d9e73c1bb9c861f3fbb0959c90dc867e135894211373c1aee3ae87b50fb9f543
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cae76ddbf149979ec2cf72995ac1cdea31877a86b4900f2229b45634402dd3c
[INFO] running `Command { std: "docker" "start" "-a" "2cae76ddbf149979ec2cf72995ac1cdea31877a86b4900f2229b45634402dd3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mcslock v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "2cae76ddbf149979ec2cf72995ac1cdea31877a86b4900f2229b45634402dd3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cae76ddbf149979ec2cf72995ac1cdea31877a86b4900f2229b45634402dd3c", kill_on_drop: false }`
[INFO] [stdout] 2cae76ddbf149979ec2cf72995ac1cdea31877a86b4900f2229b45634402dd3c
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c92735c1597fab8a497537eeff10bf1ed3c4d0e7e07b9e77946a80c44f6ae083
[INFO] running `Command { std: "docker" "start" "-a" "c92735c1597fab8a497537eeff10bf1ed3c4d0e7e07b9e77946a80c44f6ae083", kill_on_drop: false }`
[INFO] [stderr]    Compiling mcslock v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "c92735c1597fab8a497537eeff10bf1ed3c4d0e7e07b9e77946a80c44f6ae083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c92735c1597fab8a497537eeff10bf1ed3c4d0e7e07b9e77946a80c44f6ae083", kill_on_drop: false }`
[INFO] [stdout] c92735c1597fab8a497537eeff10bf1ed3c4d0e7e07b9e77946a80c44f6ae083
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e4950ba336ef275443629063c64fd1f3a74e3448031a39acbfa78598679eaecb
[INFO] running `Command { std: "docker" "start" "-a" "e4950ba336ef275443629063c64fd1f3a74e3448031a39acbfa78598679eaecb", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mcslock-9eb0756f29eafbe5)
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test raw::mutex::test::node_waiter_drop_does_not_matter ... ok
[INFO] [stdout] test raw::mutex::test::smoke ... ok
[INFO] [stdout] test raw::mutex::test::test_into_inner ... ok
[INFO] [stdout] test raw::mutex::test::test_into_inner_drop ... ok
[INFO] [stdout] test raw::mutex::test::test_get_mut ... ok
[INFO] [stdout] test raw::mutex::test::lots_and_lots_lock_yield_backoff ... ok
[INFO] [stdout] test raw::mutex::test::test_lock_arc_nested ... ok
[INFO] [stdout] test raw::mutex::test::test_lock_unsized ... ok
[INFO] [stdout] test raw::mutex::test::test_mutex_from ... ok
[INFO] [stdout] test raw::mutex::test::test_mutex_debug ... ok
[INFO] [stdout] test raw::mutex::test::test_try_lock ... ok
[INFO] [stdout] test raw::mutex::test::test_mutex_default ... ok
[INFO] [stdout] test relax::test::yields_backoff ... ok
[INFO] [stdout] test relax::test::yields ... ok
[INFO] [stdout] test raw::mutex::test::test_acquire_more_than_one_lock ... ok
[INFO] [stdout] test relax::test::loops ... ok
[INFO] [stdout] test relax::test::spins ... ok
[INFO] [stdout] test relax::test::spins_backoff ... ok
[INFO] [stdout] test raw::mutex::test::lots_and_lots_mixed_lock_yield_backoff ... ok
[INFO] [stdout] test raw::mutex::test::lots_and_lots_try_lock_yield_backoff ... ok
[INFO] [stdout] test raw::mutex::test::test_lock_arc_access_in_unwind ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mcslock
[INFO] [stderr] warning: the `main` function of this doctest won't be run as it contains expressions at the top level, meaning that the whole doctest code will be wrapped in a function
[INFO] [stderr]   --> src/lib.rs:73:1
[INFO] [stderr]    |
[INFO] [stderr] 73 | //! ```
[INFO] [stderr]    | ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the `main` function of this doctest won't be run as it contains expressions at the top level, meaning that the whole doctest code will be wrapped in a function
[INFO] [stderr]    --> src/lib.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | //! ```
[INFO] [stderr]     | ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::lock_with_then (line 400) - compile fail ... ok
[INFO] [stdout] test src/raw/mod.rs - raw::spins::Mutex (line 52) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::lock_then (line 346) - compile fail ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::try_lock_then (line 232) - compile fail ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::try_lock_then (line 203) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::try_lock_with_then (line 293) - compile fail ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::get_mut (line 451) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::new (line 145) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::lock_with_then (line 376) ... ok
[INFO] [stdout] test src/lib.rs - (line 112) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::is_locked (line 424) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 73) ... ok
[INFO] [stdout] test src/raw/mod.rs - raw::loops::Mutex (line 151) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::into_inner (line 171) ... ok
[INFO] [stdout] test src/raw/mod.rs - raw::spins::backoff::Mutex (line 76) ... ok
[INFO] [stdout] test src/relax.rs - relax::Relax (line 29) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::lock_then (line 324) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::MutexNode::new (line 33) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex<T,R>::try_lock_with_then (line 262) ... ok
[INFO] [stdout] test src/raw/mutex.rs - raw::mutex::Mutex (line 84) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.87s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e4950ba336ef275443629063c64fd1f3a74e3448031a39acbfa78598679eaecb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4950ba336ef275443629063c64fd1f3a74e3448031a39acbfa78598679eaecb", kill_on_drop: false }`
[INFO] [stdout] e4950ba336ef275443629063c64fd1f3a74e3448031a39acbfa78598679eaecb