[INFO] fetching crate thread_timer 0.3.0...
[INFO] testing thread_timer-0.3.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate thread_timer 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate thread_timer 0.3.0
[INFO] finished tweaking crates.io crate thread_timer 0.3.0
[INFO] tweaked toml for crates.io crate thread_timer 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate thread_timer 0.3.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] 8240b4793c5ca194abfef346e6d42c422208320d4af6813c122342f1d09f4504
[INFO] running `Command { std: "docker" "start" "-a" "8240b4793c5ca194abfef346e6d42c422208320d4af6813c122342f1d09f4504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8240b4793c5ca194abfef346e6d42c422208320d4af6813c122342f1d09f4504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8240b4793c5ca194abfef346e6d42c422208320d4af6813c122342f1d09f4504", kill_on_drop: false }`
[INFO] [stdout] 8240b4793c5ca194abfef346e6d42c422208320d4af6813c122342f1d09f4504
[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] ae0d0f3a531ca95f0733228576512008790a0b05f2dfc9576979889aea118f4c
[INFO] running `Command { std: "docker" "start" "-a" "ae0d0f3a531ca95f0733228576512008790a0b05f2dfc9576979889aea118f4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling thread_timer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let _ = is_waiting_condvar
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(let_underscore_lock)]` (part of `#[warn(let_underscore)]`) on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let _unused = is_waiting_condvar
[INFO] [stdout]     |              ++++++
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 240 ~         drop(is_waiting_condvar
[INFO] [stdout] 241 |           .wait_while(is_waiting_lock.lock().unwrap(), |&mut is_waiting| {
[INFO] [stdout] 242 |             is_waiting
[INFO] [stdout] 243 |           })
[INFO] [stdout] 244 ~           .unwrap());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "ae0d0f3a531ca95f0733228576512008790a0b05f2dfc9576979889aea118f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae0d0f3a531ca95f0733228576512008790a0b05f2dfc9576979889aea118f4c", kill_on_drop: false }`
[INFO] [stdout] ae0d0f3a531ca95f0733228576512008790a0b05f2dfc9576979889aea118f4c
[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] ffd574ff88cb71847bcd95ebe80e18895eb9d35d08e0de1891cee774b2364460
[INFO] running `Command { std: "docker" "start" "-a" "ffd574ff88cb71847bcd95ebe80e18895eb9d35d08e0de1891cee774b2364460", kill_on_drop: false }`
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let _ = is_waiting_condvar
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(let_underscore_lock)]` (part of `#[warn(let_underscore)]`) on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let _unused = is_waiting_condvar
[INFO] [stdout]     |              ++++++
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 240 ~         drop(is_waiting_condvar
[INFO] [stdout] 241 |           .wait_while(is_waiting_lock.lock().unwrap(), |&mut is_waiting| {
[INFO] [stdout] 242 |             is_waiting
[INFO] [stdout] 243 |           })
[INFO] [stdout] 244 ~           .unwrap());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thread_timer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let _ = is_waiting_condvar
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(let_underscore_lock)]` (part of `#[warn(let_underscore)]`) on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let _unused = is_waiting_condvar
[INFO] [stdout]     |              ++++++
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 240 ~         drop(is_waiting_condvar
[INFO] [stdout] 241 |           .wait_while(is_waiting_lock.lock().unwrap(), |&mut is_waiting| {
[INFO] [stdout] 242 |             is_waiting
[INFO] [stdout] 243 |           })
[INFO] [stdout] 244 ~           .unwrap());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "ffd574ff88cb71847bcd95ebe80e18895eb9d35d08e0de1891cee774b2364460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffd574ff88cb71847bcd95ebe80e18895eb9d35d08e0de1891cee774b2364460", kill_on_drop: false }`
[INFO] [stdout] ffd574ff88cb71847bcd95ebe80e18895eb9d35d08e0de1891cee774b2364460
[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] cea0916e6135f12d5ef574df2759173b2c5205915683f7ee5c6c5f7d56195f2e
[INFO] running `Command { std: "docker" "start" "-a" "cea0916e6135f12d5ef574df2759173b2c5205915683f7ee5c6c5f7d56195f2e", kill_on_drop: false }`
[INFO] [stderr] warning: non-binding let on a synchronization lock
[INFO] [stderr]    --> src/lib.rs:240:13
[INFO] [stderr]     |
[INFO] [stderr] 240 |         let _ = is_waiting_condvar
[INFO] [stderr]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(let_underscore_lock)]` (part of `#[warn(let_underscore)]`) on by default
[INFO] [stderr] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stderr]     |
[INFO] [stderr] 240 |         let _unused = is_waiting_condvar
[INFO] [stderr]     |              ++++++
[INFO] [stderr] help: consider immediately dropping the value
[INFO] [stderr]     |
[INFO] [stderr] 240 ~         drop(is_waiting_condvar
[INFO] [stderr] 241 |           .wait_while(is_waiting_lock.lock().unwrap(), |&mut is_waiting| {
[INFO] [stderr] 242 |             is_waiting
[INFO] [stderr] 243 |           })
[INFO] [stderr] 244 ~           .unwrap());
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `thread_timer` (lib) generated 1 warning (run `cargo fix --lib -p thread_timer` to apply 1 suggestion)
[INFO] [stderr] warning: `thread_timer` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/thread_timer-6d08409e1a6846f0)
[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/thread_timer.rs (/opt/rustwide/target/debug/deps/thread_timer-4938ab54f193067e)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test cannot_cancel_if_not_waiting ... ok
[INFO] [stdout] test does_not_deadlock_when_canceling_long_task ... ok
[INFO] [stdout] test executes_thunk_after_wait ... ok
[INFO] [stdout] test can_start_immediately_after_cancel ... ok
[INFO] [stdout] test thunk_does_not_run_if_canceled ... ok
[INFO] [stdout] test can_be_reused ... ok
[INFO] [stdout] test can_start_cancel_start ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests thread_timer
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - ThreadTimer::start (line 139) ... ok
[INFO] [stdout] test src/lib.rs - ThreadTimer::new (line 90) ... ok
[INFO] [stdout] test src/lib.rs - ThreadTimer (line 57) ... ok
[INFO] [stdout] test src/lib.rs - ThreadTimer (line 39) ... ok
[INFO] [stdout] test src/lib.rs - ThreadTimer::cancel (line 188) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cea0916e6135f12d5ef574df2759173b2c5205915683f7ee5c6c5f7d56195f2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cea0916e6135f12d5ef574df2759173b2c5205915683f7ee5c6c5f7d56195f2e", kill_on_drop: false }`
[INFO] [stdout] cea0916e6135f12d5ef574df2759173b2c5205915683f7ee5c6c5f7d56195f2e
