[INFO] fetching crate observable-property 0.3.5...
[INFO] testing observable-property-0.3.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate observable-property 0.3.5 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate observable-property 0.3.5
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate observable-property 0.3.5
[INFO] tweaked toml for crates.io crate observable-property 0.3.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate observable-property 0.3.5 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate observable-property 0.3.5 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4433b6725279dbd6e237bc7dde65fdaa57dec2df975aeb1565a54069251cf648
[INFO] running `Command { std: "docker" "start" "-a" "4433b6725279dbd6e237bc7dde65fdaa57dec2df975aeb1565a54069251cf648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4433b6725279dbd6e237bc7dde65fdaa57dec2df975aeb1565a54069251cf648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4433b6725279dbd6e237bc7dde65fdaa57dec2df975aeb1565a54069251cf648", kill_on_drop: false }`
[INFO] [stdout] 4433b6725279dbd6e237bc7dde65fdaa57dec2df975aeb1565a54069251cf648
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b42e367ae7d4f52d64fbe290c75f7528f2a16242f4672709b28552116e746489
[INFO] running `Command { std: "docker" "start" "-a" "b42e367ae7d4f52d64fbe290c75f7528f2a16242f4672709b28552116e746489", kill_on_drop: false }`
[INFO] [stderr]    Compiling observable-property v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "b42e367ae7d4f52d64fbe290c75f7528f2a16242f4672709b28552116e746489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b42e367ae7d4f52d64fbe290c75f7528f2a16242f4672709b28552116e746489", kill_on_drop: false }`
[INFO] [stdout] b42e367ae7d4f52d64fbe290c75f7528f2a16242f4672709b28552116e746489
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 815c9b3059e01008b3e8bcd333b19ae480bf6861fd61524171b0a49e0d0c8074
[INFO] running `Command { std: "docker" "start" "-a" "815c9b3059e01008b3e8bcd333b19ae480bf6861fd61524171b0a49e0d0c8074", kill_on_drop: false }`
[INFO] [stderr]    Compiling observable-property v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `set_age` is never used
[INFO] [stdout]   --> examples/multithreaded.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Person {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn set_age(&self, new_age: i32) -> Result<(), observable_property::PropertyError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "815c9b3059e01008b3e8bcd333b19ae480bf6861fd61524171b0a49e0d0c8074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "815c9b3059e01008b3e8bcd333b19ae480bf6861fd61524171b0a49e0d0c8074", kill_on_drop: false }`
[INFO] [stdout] 815c9b3059e01008b3e8bcd333b19ae480bf6861fd61524171b0a49e0d0c8074
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 068cdffb981dfa3f22ca3e14de9a32ef13a032a558343ac8c5742883f4b66c81
[INFO] running `Command { std: "docker" "start" "-a" "068cdffb981dfa3f22ca3e14de9a32ef13a032a558343ac8c5742883f4b66c81", kill_on_drop: false }`
[INFO] [stderr] warning: method `set_age` is never used
[INFO] [stderr]   --> examples/multithreaded.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl Person {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 33 |     fn set_age(&self, new_age: i32) -> Result<(), observable_property::PropertyError> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `observable-property` (example "multithreaded") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/observable_property-4553bdb86570a8a4)
[INFO] [stdout] 
[INFO] [stdout] running 49 tests
[INFO] [stdout] test tests::test_filtered_subscription_automatic_cleanup ... ok
[INFO] [stdout] test tests::test_filtered_observer ... ok
[INFO] [stdout] test tests::test_filtered_subscription_complex_filter ... ok
[INFO] [stdout] test tests::test_filtered_subscription_vs_manual_filtered ... ok
[INFO] [stdout] test tests::test_concurrent_subscribe_unsubscribe ... ok
[INFO] [stdout] test tests::test_filtered_subscription_error_handling ... ok
[INFO] [stdout] test tests::test_filtered_subscription_with_panicking_filter ... ok
[INFO] [stdout] test tests::test_multiple_filtered_subscriptions ... ok
[INFO] [stdout] test tests::test_lock_poisoning ... ok
[INFO] [stdout] test tests::test_multiple_observer_panics_isolation ... ok
[INFO] [stdout] test tests::test_multiple_subscriptions_with_cleanup ... ok
[INFO] [stdout] test tests::test_observer_id_wraparound ... ok
[INFO] [stdout] test tests::test_filtered_subscription_thread_safety ... ok
[INFO] [stdout] test tests::test_observer_with_mutable_state ... ok
[INFO] [stdout] test tests::test_property_creation_and_basic_operations ... ok
[INFO] [stdout] test tests::test_subscribe_with_subscription_error_handling ... ok
[INFO] [stdout] test tests::test_subscription_automatic_cleanup ... ok
[INFO] [stdout] test tests::test_subscription_behavior_before_and_after_poison ... ok
[INFO] [stdout] test tests::test_concurrent_subscription_drops_with_poison ... ok
[INFO] [stdout] test tests::test_observer_subscription_and_notification ... ok
[INFO] [stdout] test tests::test_subscription_cleanup_behavior_with_poisoned_lock ... ok
[INFO] [stdout] test tests::test_observer_panic_isolation ... ok
[INFO] [stdout] test tests::test_subscription_creation_with_poisoned_lock ... ok
[INFO] [stdout] test tests::test_subscription_cross_thread_drop ... ok
[INFO] [stdout] test tests::test_subscription_drop_with_poisoned_lock ... ok
[INFO] [stdout] test tests::test_subscription_explicit_drop ... ok
[INFO] [stdout] test tests::test_subscription_in_conditional_blocks ... ok
[INFO] [stdout] test tests::test_subscription_move_semantics ... ok
[INFO] [stdout] test tests::test_subscription_vs_manual_unsubscribe ... ok
[INFO] [stdout] test tests::test_subscription_with_early_return ... ok
[INFO] [stdout] test tests::test_subscription_with_property_cloning ... ok
[INFO] [stdout] test tests::test_unsubscribe_nonexistent_observer ... ok
[INFO] [stdout] test tests::test_subscription_thread_safety ... ok
[INFO] [stdout] test tests::test_multiple_subscription_cleanup_with_poisoned_lock ... ok
[INFO] [stdout] test tests::test_concurrent_subscription_creation_and_property_changes ... ok
[INFO] [stdout] test tests::test_with_max_threads_basic_functionality ... ok
[INFO] [stdout] test tests::test_with_max_threads_creation ... ok
[INFO] [stdout] test tests::test_with_max_threads_error_handling ... ok
[INFO] [stdout] test tests::test_subscription_with_async_property_changes ... ok
[INFO] [stdout] test tests::test_async_observer_panic_isolation ... ok
[INFO] [stdout] test tests::test_with_max_threads_large_values ... ok
[INFO] [stdout] test tests::test_with_max_threads_zero_defaults_to_max_threads ... ok
[INFO] [stdout] test tests::test_async_set_performance ... ok
[INFO] [stdout] test tests::test_thread_safety_concurrent_reads ... ok
[INFO] [stdout] test tests::test_with_max_threads_vs_regular_constructor ... ok
[INFO] [stdout] test tests::test_with_max_threads_clone_behavior ... ok
[INFO] [stdout] test tests::test_very_large_observer_count ... ok
[INFO] [stdout] test tests::test_with_max_threads_thread_safety ... ok
[INFO] [stdout] test tests::test_with_max_threads_async_performance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 49 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests observable_property
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test src/lib.rs - (line 78) ... ok
[INFO] [stdout] test src/lib.rs - (line 49) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty (line 513) ... ok
[INFO] [stdout] test src/lib.rs - (line 164) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::get (line 680) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::set (line 717) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::new (line 557) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe (line 862) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::clone (line 1377) ... ok
[INFO] [stdout] test src/lib.rs - (line 135) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::set_async (line 783) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_filtered (line 961) ... ok
[INFO] [stdout] test src/lib.rs - (line 106) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_filtered_with_subscription (line 1227) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_with_subscription (line 1069) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_filtered_with_subscription (line 1268) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_filtered_with_subscription (line 1197) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_with_subscription (line 1044) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_with_subscription (line 1103) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_with_subscription (line 1132) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::unsubscribe (line 910) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::with_max_threads (line 608) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::with_max_threads (line 616) ... ok
[INFO] [stdout] test src/lib.rs - Subscription (line 369) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::with_max_threads (line 600) ... ok
[INFO] [stdout] test src/lib.rs - Subscription (line 394) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::with_max_threads (line 637) ... ok
[INFO] [stdout] test src/lib.rs - Subscription (line 427) ... ok
[INFO] [stdout] test src/lib.rs - ObservableProperty<T>::subscribe_filtered_with_subscription (line 1303) ... 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] running `Command { std: "docker" "inspect" "068cdffb981dfa3f22ca3e14de9a32ef13a032a558343ac8c5742883f4b66c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "068cdffb981dfa3f22ca3e14de9a32ef13a032a558343ac8c5742883f4b66c81", kill_on_drop: false }`
[INFO] [stdout] 068cdffb981dfa3f22ca3e14de9a32ef13a032a558343ac8c5742883f4b66c81