[INFO] fetching crate parc 1.0.1... [INFO] testing parc-1.0.1 against beta-2026-04-21 for beta-1.96-1 [INFO] extracting crate parc 1.0.1 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate parc 1.0.1 [INFO] finished tweaking crates.io crate parc 1.0.1 [INFO] tweaked toml for crates.io crate parc 1.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate parc 1.0.1 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 34a0aac21796595ea8c7f9a0c1c8c8c6997b802dc52e45d25b4cb2802a2d0fba [INFO] running `Command { std: "docker" "start" "-a" "34a0aac21796595ea8c7f9a0c1c8c8c6997b802dc52e45d25b4cb2802a2d0fba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "34a0aac21796595ea8c7f9a0c1c8c8c6997b802dc52e45d25b4cb2802a2d0fba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "34a0aac21796595ea8c7f9a0c1c8c8c6997b802dc52e45d25b4cb2802a2d0fba", kill_on_drop: false }` [INFO] [stdout] 34a0aac21796595ea8c7f9a0c1c8c8c6997b802dc52e45d25b4cb2802a2d0fba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a552ca2e3220f2527ecdb115330e28eefd958994329b17fab9576b830eba0ad1 [INFO] running `Command { std: "docker" "start" "-a" "a552ca2e3220f2527ecdb115330e28eefd958994329b17fab9576b830eba0ad1", kill_on_drop: false }` [INFO] [stderr] Compiling parc v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition value: `no_std` [INFO] [stdout] --> src/lib.rs:443:21 [INFO] [stdout] | [INFO] [stdout] 443 | #[cfg(all(test, not(feature = "no_std")))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default` and `std` [INFO] [stdout] = help: consider adding `no_std` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:119:20 [INFO] [stdout] | [INFO] [stdout] 119 | while lock.compare_and_swap(false, true, Ordering::Release) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:147:20 [INFO] [stdout] | [INFO] [stdout] 147 | while lock.compare_and_swap(true, false, Ordering::Release) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s [INFO] running `Command { std: "docker" "inspect" "a552ca2e3220f2527ecdb115330e28eefd958994329b17fab9576b830eba0ad1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a552ca2e3220f2527ecdb115330e28eefd958994329b17fab9576b830eba0ad1", kill_on_drop: false }` [INFO] [stdout] a552ca2e3220f2527ecdb115330e28eefd958994329b17fab9576b830eba0ad1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1583bb293b179e153ba65fd93c99fcc162af5a22484589ba7e7e92d20a679cc4 [INFO] running `Command { std: "docker" "start" "-a" "1583bb293b179e153ba65fd93c99fcc162af5a22484589ba7e7e92d20a679cc4", kill_on_drop: false }` [INFO] [stderr] Compiling parc v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition value: `no_std` [INFO] [stdout] --> src/lib.rs:443:21 [INFO] [stdout] | [INFO] [stdout] 443 | #[cfg(all(test, not(feature = "no_std")))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default` and `std` [INFO] [stdout] = help: consider adding `no_std` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:119:20 [INFO] [stdout] | [INFO] [stdout] 119 | while lock.compare_and_swap(false, true, Ordering::Release) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:147:20 [INFO] [stdout] | [INFO] [stdout] 147 | while lock.compare_and_swap(true, false, Ordering::Release) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `no_std` [INFO] [stdout] --> src/lib.rs:443:21 [INFO] [stdout] | [INFO] [stdout] 443 | #[cfg(all(test, not(feature = "no_std")))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default` and `std` [INFO] [stdout] = help: consider adding `no_std` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:119:20 [INFO] [stdout] | [INFO] [stdout] 119 | while lock.compare_and_swap(false, true, Ordering::Release) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:147:20 [INFO] [stdout] | [INFO] [stdout] 147 | while lock.compare_and_swap(true, false, Ordering::Release) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s [INFO] running `Command { std: "docker" "inspect" "1583bb293b179e153ba65fd93c99fcc162af5a22484589ba7e7e92d20a679cc4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1583bb293b179e153ba65fd93c99fcc162af5a22484589ba7e7e92d20a679cc4", kill_on_drop: false }` [INFO] [stdout] 1583bb293b179e153ba65fd93c99fcc162af5a22484589ba7e7e92d20a679cc4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f17f3d8c25e4fa5e4c85fa859adee77b3f26e0bc817af7b2331637b9472c065b [INFO] running `Command { std: "docker" "start" "-a" "f17f3d8c25e4fa5e4c85fa859adee77b3f26e0bc817af7b2331637b9472c065b", kill_on_drop: false }` [INFO] [stderr] warning: unexpected `cfg` condition value: `no_std` [INFO] [stderr] --> src/lib.rs:443:21 [INFO] [stderr] | [INFO] [stderr] 443 | #[cfg(all(test, not(feature = "no_std")))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `feature` are: `default` and `std` [INFO] [stderr] = help: consider adding `no_std` as a feature in `Cargo.toml` [INFO] [stderr] = note: see for more information about checking conditional configuration [INFO] [stderr] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stderr] --> src/lib.rs:119:20 [INFO] [stderr] | [INFO] [stderr] 119 | while lock.compare_and_swap(false, true, Ordering::Release) {} [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated method `core::sync::atomic::Atomic::::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stderr] --> src/lib.rs:147:20 [INFO] [stderr] | [INFO] [stderr] 147 | while lock.compare_and_swap(true, false, Ordering::Release) {} [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `parc` (lib) generated 3 warnings [INFO] [stderr] warning: `parc` (lib test) generated 3 warnings (3 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/parc-01748cf15137b3b8) [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test tests::join_after_thread ... ok [INFO] [stdout] test tests::new ... ok [INFO] [stdout] test tests::multiple_threads ... ok [INFO] [stdout] test tests::loop_read_thread ... ok [INFO] [stdout] test tests::one_simple_thread ... ok [INFO] [stdout] test tests::many_loop_read_threads ... ok [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] [stdout] test tests::one_panic_read_threads - should panic ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::one_panic_read_threads stdout ---- [INFO] [stdout] note: test did not panic as expected at src/lib.rs:542:8 [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] tests::one_panic_read_threads [INFO] [stdout] [INFO] [stdout] test result: FAILED. 6 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f17f3d8c25e4fa5e4c85fa859adee77b3f26e0bc817af7b2331637b9472c065b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f17f3d8c25e4fa5e4c85fa859adee77b3f26e0bc817af7b2331637b9472c065b", kill_on_drop: false }` [INFO] [stdout] f17f3d8c25e4fa5e4c85fa859adee77b3f26e0bc817af7b2331637b9472c065b