[INFO] fetching crate scoped-thread-pool 1.0.4...
[INFO] testing scoped-thread-pool-1.0.4 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate scoped-thread-pool 1.0.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate scoped-thread-pool 1.0.4
[INFO] finished tweaking crates.io crate scoped-thread-pool 1.0.4
[INFO] tweaked toml for crates.io crate scoped-thread-pool 1.0.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scoped-thread-pool 1.0.4 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 scoped-thread-pool 1.0.4 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5fd4edeb03d7b1679b2f09954e2dd330345287d94466ee94233653440149477a
[INFO] running `Command { std: "docker" "start" "-a" "5fd4edeb03d7b1679b2f09954e2dd330345287d94466ee94233653440149477a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fd4edeb03d7b1679b2f09954e2dd330345287d94466ee94233653440149477a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd4edeb03d7b1679b2f09954e2dd330345287d94466ee94233653440149477a", kill_on_drop: false }`
[INFO] [stdout] 5fd4edeb03d7b1679b2f09954e2dd330345287d94466ee94233653440149477a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a9adc523de9afbea80413e9101c004730a56e990218b12f8eb016092b8426669
[INFO] running `Command { std: "docker" "start" "-a" "a9adc523de9afbea80413e9101c004730a56e990218b12f8eb016092b8426669", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling variance v0.1.3
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling scoped-thread-pool v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:510:17
[INFO] [stdout]     |
[INFO] [stdout] 510 | struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stdout]     |        -------- ^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 510 - struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stdout] 510 + struct Sentinel((), Option<Arc<WaitGroup>>);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `Command { std: "docker" "inspect" "a9adc523de9afbea80413e9101c004730a56e990218b12f8eb016092b8426669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9adc523de9afbea80413e9101c004730a56e990218b12f8eb016092b8426669", kill_on_drop: false }`
[INFO] [stdout] a9adc523de9afbea80413e9101c004730a56e990218b12f8eb016092b8426669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e6d85eaa62202d4ec60071ad654cd5bd4ec62383d0117fed13f82fc6a201e93b
[INFO] running `Command { std: "docker" "start" "-a" "e6d85eaa62202d4ec60071ad654cd5bd4ec62383d0117fed13f82fc6a201e93b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:510:17
[INFO] [stdout]     |
[INFO] [stdout] 510 | struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stdout]     |        -------- ^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 510 - struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stdout] 510 + struct Sentinel((), Option<Arc<WaitGroup>>);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling scoped-thread-pool v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:510:17
[INFO] [stdout]     |
[INFO] [stdout] 510 | struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stdout]     |        -------- ^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:24
[INFO] [stdout]     |
[INFO] [stdout]   1 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(dead_code)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 510 - struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stdout] 510 + struct Sentinel((), Option<Arc<WaitGroup>>);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `Command { std: "docker" "inspect" "e6d85eaa62202d4ec60071ad654cd5bd4ec62383d0117fed13f82fc6a201e93b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d85eaa62202d4ec60071ad654cd5bd4ec62383d0117fed13f82fc6a201e93b", kill_on_drop: false }`
[INFO] [stdout] e6d85eaa62202d4ec60071ad654cd5bd4ec62383d0117fed13f82fc6a201e93b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] de681e79a06ba6e734cfcb9c1a3e440d714745634975e962885f5f705f7c6eae
[INFO] running `Command { std: "docker" "start" "-a" "de681e79a06ba6e734cfcb9c1a3e440d714745634975e962885f5f705f7c6eae", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/lib.rs:510:17
[INFO] [stderr]     |
[INFO] [stderr] 510 | struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stderr]     |        -------- ^^^^
[INFO] [stderr]     |        |
[INFO] [stderr]     |        field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 510 - struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stderr] 510 + struct Sentinel((), Option<Arc<WaitGroup>>);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `scoped-thread-pool` (lib) generated 1 warning
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/lib.rs:510:17
[INFO] [stderr]     |
[INFO] [stderr] 510 | struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stderr]     |        -------- ^^^^
[INFO] [stderr]     |        |
[INFO] [stderr]     |        field in this struct
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:1:24
[INFO] [stderr]     |
[INFO] [stderr]   1 | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(dead_code)]` implied by `#[warn(warnings)]`
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 510 - struct Sentinel(Pool, Option<Arc<WaitGroup>>);
[INFO] [stderr] 510 + struct Sentinel((), Option<Arc<WaitGroup>>);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `scoped-thread-pool` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scoped_thread_pool-f2ad8ba9daa9c3d2)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test test::test_no_thread_config ... ok
[INFO] [stdout] test test::test_recurse ... ok
[INFO] [stdout] test test::test_simple_use ... ok
[INFO] [stdout] test test::test_spawn_doesnt_hang ... ok
[INFO] [stdout] test test::test_shutdown ... ok
[INFO] [stdout] test test::test_forever_zoom ... ok
[INFO] [stdout] test test::test_zoom ... ok
[INFO] [stdout] test test::test_with_thread_config ... ok
[INFO] [stdout] test test::test_pool_panic - should panic ... ok
[INFO] [stdout] test test::test_scheduler_panic - should panic ... ok
[INFO] [stdout] test test::test_recurse_execute_panic - should panic ... ok
[INFO] [stdout] test test::test_recurse_scheduler_panic - should panic ... ok
[INFO] [stdout] test test::test_zoomed_scoped_execute_panic - should panic ... ok
[INFO] [stdout] test test::test_scoped_execute_panic - should panic ... ok
[INFO] [stdout] test test::test_scoped_panic_waits_for_all_tasks - should panic ... ok
[INFO] [stdout] test test::test_scheduler_panic_waits_for_tasks - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scoped_thread_pool
[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] running `Command { std: "docker" "inspect" "de681e79a06ba6e734cfcb9c1a3e440d714745634975e962885f5f705f7c6eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de681e79a06ba6e734cfcb9c1a3e440d714745634975e962885f5f705f7c6eae", kill_on_drop: false }`
[INFO] [stdout] de681e79a06ba6e734cfcb9c1a3e440d714745634975e962885f5f705f7c6eae
