[INFO] fetching crate jthread 0.1.1... [INFO] testing jthread-0.1.1 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate jthread 0.1.1 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate jthread 0.1.1 [INFO] finished tweaking crates.io crate jthread 0.1.1 [INFO] tweaked toml for crates.io crate jthread 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate jthread 0.1.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 73 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.5.1 (available: v0.7.0) [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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 433861a05b2ebda40a23d822968201104267f54f3e4a3984674a909469aec88e [INFO] running `Command { std: "docker" "start" "-a" "433861a05b2ebda40a23d822968201104267f54f3e4a3984674a909469aec88e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "433861a05b2ebda40a23d822968201104267f54f3e4a3984674a909469aec88e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "433861a05b2ebda40a23d822968201104267f54f3e4a3984674a909469aec88e", kill_on_drop: false }` [INFO] [stdout] 433861a05b2ebda40a23d822968201104267f54f3e4a3984674a909469aec88e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 21f285c42577225d09fd958471672bacef77c895011a7f4651eee02825de72a5 [INFO] running `Command { std: "docker" "start" "-a" "21f285c42577225d09fd958471672bacef77c895011a7f4651eee02825de72a5", kill_on_drop: false }` [INFO] [stderr] Compiling jthread v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:185:24 [INFO] [stdout] | [INFO] [stdout] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s [INFO] running `Command { std: "docker" "inspect" "21f285c42577225d09fd958471672bacef77c895011a7f4651eee02825de72a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "21f285c42577225d09fd958471672bacef77c895011a7f4651eee02825de72a5", kill_on_drop: false }` [INFO] [stdout] 21f285c42577225d09fd958471672bacef77c895011a7f4651eee02825de72a5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7d49a2e490df935a32994c47d7425364acbc379f31bb81749f8aa8a227a2b943 [INFO] running `Command { std: "docker" "start" "-a" "7d49a2e490df935a32994c47d7425364acbc379f31bb81749f8aa8a227a2b943", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Compiling anstyle v1.0.13 [INFO] [stderr] Compiling plotters-backend v0.3.7 [INFO] [stderr] Compiling ciborium-io v0.2.2 [INFO] [stderr] Compiling regex-syntax v0.8.6 [INFO] [stderr] Compiling half v2.6.0 [INFO] [stderr] Compiling clap_lex v0.7.5 [INFO] [stderr] Compiling cast v0.3.0 [INFO] [stderr] Compiling is-terminal v0.4.16 [INFO] [stderr] Compiling oorandom v11.1.5 [INFO] [stderr] Compiling anes v0.1.6 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:185:24 [INFO] [stdout] | [INFO] [stdout] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling ciborium-ll v0.2.2 [INFO] [stderr] Compiling clap_builder v4.5.48 [INFO] [stderr] Compiling plotters-svg v0.3.7 [INFO] [stderr] Compiling plotters v0.3.7 [INFO] [stderr] Compiling criterion-plot v0.5.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling crossbeam-deque v0.8.6 [INFO] [stderr] Compiling regex-automata v0.4.11 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling rayon v1.11.0 [INFO] [stderr] Compiling clap v4.5.48 [INFO] [stderr] Compiling regex v1.11.3 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling ciborium v0.2.2 [INFO] [stderr] Compiling criterion v0.5.1 [INFO] [stderr] Compiling jthread v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/lib.rs:553:17 [INFO] [stdout] | [INFO] [stdout] 553 | struct Fork(u32); [INFO] [stdout] | ---- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Fork` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:185:24 [INFO] [stdout] | [INFO] [stdout] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 23.50s [INFO] running `Command { std: "docker" "inspect" "7d49a2e490df935a32994c47d7425364acbc379f31bb81749f8aa8a227a2b943", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7d49a2e490df935a32994c47d7425364acbc379f31bb81749f8aa8a227a2b943", kill_on_drop: false }` [INFO] [stdout] 7d49a2e490df935a32994c47d7425364acbc379f31bb81749f8aa8a227a2b943 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 296c9e48b14ad532a9b5373f5d1d7e9c4a9c7b1948ea7b01c3e4864b7cd0af1a [INFO] running `Command { std: "docker" "start" "-a" "296c9e48b14ad532a9b5373f5d1d7e9c4a9c7b1948ea7b01c3e4864b7cd0af1a", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/lib.rs:185:24 [INFO] [stderr] | [INFO] [stderr] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stderr] | ^^^^^^^^^ ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 185 | pub(crate) fn lock(&mut self) -> LockResult> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `jthread` (lib) generated 1 warning (run `cargo fix --lib -p jthread` to apply 1 suggestion) [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/lib.rs:553:17 [INFO] [stderr] | [INFO] [stderr] 553 | struct Fork(u32); [INFO] [stderr] | ---- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing this field [INFO] [stderr] = note: `Fork` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `jthread` (lib test) generated 2 warnings (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/jthread-6750ef5d0adb2469) [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test directed_graph::directed_graph_tests::test_adding_edge_creates_cycle ... ok [INFO] [stdout] test directed_graph::directed_graph_tests::test_empty_graph ... ok [INFO] [stdout] test directed_graph::directed_graph_tests::test_single_node_self_loop ... ok [INFO] [stdout] test directed_graph::directed_graph_tests::test_adding_edge_no_cycle ... ok [INFO] [stdout] test tests::concurrent_access ... ok [INFO] [stdout] test tests::different_regions_multi_threaded ... ok [INFO] [stdout] test tests::dining_philosophers_different_region ... ok [INFO] [stdout] test tests::dining_philosophers_same_region ... ok [INFO] [stdout] test tests::same_regions ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.50s [INFO] [stdout] [INFO] [stderr] Doc-tests jthread [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test src/lib.rs - JMutex::with_default (line 168) ... ok [INFO] [stdout] test src/lib.rs - Region (line 82) ... ok [INFO] [stdout] test src/lib.rs - sync (line 376) ... ok [INFO] [stdout] test src/lib.rs - JMutex (line 121) ... ok [INFO] [stdout] test src/lib.rs - JMutex::new (line 145) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "296c9e48b14ad532a9b5373f5d1d7e9c4a9c7b1948ea7b01c3e4864b7cd0af1a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "296c9e48b14ad532a9b5373f5d1d7e9c4a9c7b1948ea7b01c3e4864b7cd0af1a", kill_on_drop: false }` [INFO] [stdout] 296c9e48b14ad532a9b5373f5d1d7e9c4a9c7b1948ea7b01c3e4864b7cd0af1a