[INFO] fetching crate lockbell 0.1.0...
[INFO] testing lockbell-0.1.0 against 1.95.0 for beta-1.96-1
[INFO] extracting crate lockbell 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate lockbell 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lockbell 0.1.0
[INFO] tweaked toml for crates.io crate lockbell 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lockbell 0.1.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lockbell 0.1.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ed3d89d50c6e0660c4c5dd3f0961e13a710507662d8e268eb8f15f12177541f
[INFO] running `Command { std: "docker" "start" "-a" "2ed3d89d50c6e0660c4c5dd3f0961e13a710507662d8e268eb8f15f12177541f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ed3d89d50c6e0660c4c5dd3f0961e13a710507662d8e268eb8f15f12177541f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed3d89d50c6e0660c4c5dd3f0961e13a710507662d8e268eb8f15f12177541f", kill_on_drop: false }`
[INFO] [stdout] 2ed3d89d50c6e0660c4c5dd3f0961e13a710507662d8e268eb8f15f12177541f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a79ae1a2d0b69b0946e7649703c8ff288250100df65d14396dfd67932ada4437
[INFO] running `Command { std: "docker" "start" "-a" "a79ae1a2d0b69b0946e7649703c8ff288250100df65d14396dfd67932ada4437", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling lockbell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "a79ae1a2d0b69b0946e7649703c8ff288250100df65d14396dfd67932ada4437", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a79ae1a2d0b69b0946e7649703c8ff288250100df65d14396dfd67932ada4437", kill_on_drop: false }`
[INFO] [stdout] a79ae1a2d0b69b0946e7649703c8ff288250100df65d14396dfd67932ada4437
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d75708892d2683b6dc8f6d6f2468787811f489aa2ad6f89891289c7391e94c7
[INFO] running `Command { std: "docker" "start" "-a" "8d75708892d2683b6dc8f6d6f2468787811f489aa2ad6f89891289c7391e94c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling lockbell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "8d75708892d2683b6dc8f6d6f2468787811f489aa2ad6f89891289c7391e94c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d75708892d2683b6dc8f6d6f2468787811f489aa2ad6f89891289c7391e94c7", kill_on_drop: false }`
[INFO] [stdout] 8d75708892d2683b6dc8f6d6f2468787811f489aa2ad6f89891289c7391e94c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 17ed42bd16bd378e230b98a8c0c6c2baeaf5412a621736cd3723fb3c6c13fa73
[INFO] running `Command { std: "docker" "start" "-a" "17ed42bd16bd378e230b98a8c0c6c2baeaf5412a621736cd3723fb3c6c13fa73", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lockbell-827e43c44835e15c)
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::race::test_read_guard_drop_atomicity ... ok
[INFO] [stdout] test tests::race::test_callbacks_run_after_dropping_is_reset ... ok
[INFO] [stdout] test tests::race::test_try_write_or_during_drain_eventually_proceeds ... ok
[INFO] [stdout] test tests::race::test_while_dropping_loop_is_entered ... ok
[INFO] [stdout] test tests::race::test_in_flight_try_write_or_collected_by_write_guard_drain ... ok
[INFO] [stdout] test tests::race::test_write_guard_locking_zero_wait_is_entered ... ok
[INFO] [stdout] test tests::race::test_in_flight_try_write_or_during_last_read_guard_drop ... ok
[INFO] [stderr]      Running tests/basic.rs (/opt/rustwide/target/debug/deps/basic-7e73dba86be1e3f5)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test test_from_rwlock ... ok
[INFO] [stdout] test test_concurrent_reads ... ok
[INFO] [stdout] test test_into_rwlock ... ok
[INFO] [stdout] test test_read ... ok
[INFO] [stdout] test test_try_write_fails_when_read_held ... ok
[INFO] [stdout] test test_try_write_fails_when_write_held ... ok
[INFO] [stdout] test test_try_write_or_else_lazy_not_called_on_success ... ok
[INFO] [stdout] test test_try_write_or_succeeds_when_free ... ok
[INFO] [stdout] test test_try_write_succeeds_when_free ... ok
[INFO] [stdout] test test_write_guard_deref_mut ... ok
[INFO] [stdout] test test_from_rwlock_trait ... ok
[INFO] [stderr]      Running tests/concurrency.rs (/opt/rustwide/target/debug/deps/concurrency-802698be199d5876)
[INFO] [stdout] test test_from_value ... ok
[INFO] [stdout] test test_into_inner_drops_pending_callbacks ... ok
[INFO] [stdout] test test_new_and_into_inner ... ok
[INFO] [stdout] test test_try_read_fails_during_write ... ok
[INFO] [stdout] test test_try_read_succeeds_when_free ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test test_alternating_read_write_no_lost_callbacks ... ok
[INFO] [stdout] test test_read_guard_acquired_during_drain_does_not_deadlock ... ok
[INFO] [stdout] test test_multiple_readers_callbacks_fire_on_last_drop ... ok
[INFO] [stdout] test test_concurrent_try_write_or_while_reader_held ... ok
[INFO] [stdout] test test_high_contention_stress ... ok
[INFO] [stdout] test test_many_threads_write_and_callback ... ok
[INFO] [stdout] test test_stress_many_writers_one_reader ... ok
[INFO] [stdout] test test_in_flight_try_write_or_observed_by_drain ... ok
[INFO] [stderr]      Running tests/guard_map.rs (/opt/rustwide/target/debug/deps/guard_map-39ce54b14927b45f)
[INFO] [stdout] test test_try_write_or_races_last_read_guard_drop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stderr]      Running tests/read.rs (/opt/rustwide/target/debug/deps/read-5e7adaa95e2f6d9f)
[INFO] [stdout] test test_map_write_guard ... ok
[INFO] [stdout] test test_map_write_guard_fires_callbacks ... ok
[INFO] [stdout] test test_map_read_guard_fires_callbacks ... ok
[INFO] [stdout] test test_map_read_guard ... ok
[INFO] [stdout] test test_try_map_err_write_guard_failure ... ok
[INFO] [stdout] test test_try_map_or_err_read_guard_success ... ok
[INFO] [stdout] test test_try_map_read_guard_failure ... ok
[INFO] [stdout] test test_try_map_read_guard_success ... ok
[INFO] [stdout] test test_try_map_read_guard_failure_still_fires_callbacks ... ok
[INFO] [stdout] test test_try_map_write_guard_failure ... ok
[INFO] [stdout] test test_try_map_or_err_read_guard_failure ... ok
[INFO] [stdout] test test_try_map_write_guard_failure_still_fires_callbacks ... ok
[INFO] [stdout] test test_try_map_err_write_guard_success ... ok
[INFO] [stdout] test test_try_map_write_guard_success ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_callback_no_lock_held_read_path ... ok
[INFO] [stdout] test test_callback_fires_immediately_not_deferred ... ok
[INFO] [stdout] test test_callback_fires_on_try_read_guard_drop ... ok
[INFO] [stdout] test test_callback_from_read_guard_drain_can_re_register ... ok
[INFO] [stdout] test test_callback_fires_on_last_read_guard_drop ... ok
[INFO] [stdout] test test_callback_fires_on_single_read_guard_drop ... ok
[INFO] [stdout] test test_multiple_callbacks_fired_by_last_read_guard ... ok
[INFO] [stdout] test test_callback_panic_read_guard_path ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/read_write.rs (/opt/rustwide/target/debug/deps/read_write-994963b9e33abee2)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_not_dropping_unblocked_after_read_guard_drain ... ok
[INFO] [stdout] test test_write_guard_drop_then_read_guard_drop_sequence ... ok
[INFO] [stdout] test test_dropping_flag_prevents_double_drain ... ok
[INFO] [stdout] test test_read_guard_during_write_callback ... ok
[INFO] [stdout] test test_write_then_read_then_write_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/write.rs (/opt/rustwide/target/debug/deps/write-5b421350ca53490e)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_callback_can_call_try_write ... ok
[INFO] [stdout] test test_write_guard_mutates_value ... ok
[INFO] [stdout] test test_write_triggers_callbacks ... ok
[INFO] [stdout] test test_callback_sees_updated_value ... ok
[INFO] [stdout] test test_multiple_callbacks ... ok
[INFO] [stdout] test test_callback ... ok
[INFO] [stdout] test test_callback_panic_does_not_skip_subsequent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lockbell
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/../README.md - (line 21) ... 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] all doctests ran in 0.52s; merged doctests compilation took 0.51s
[INFO] running `Command { std: "docker" "inspect" "17ed42bd16bd378e230b98a8c0c6c2baeaf5412a621736cd3723fb3c6c13fa73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17ed42bd16bd378e230b98a8c0c6c2baeaf5412a621736cd3723fb3c6c13fa73", kill_on_drop: false }`
[INFO] [stdout] 17ed42bd16bd378e230b98a8c0c6c2baeaf5412a621736cd3723fb3c6c13fa73