[INFO] fetching crate thread-scoped 1.0.2...
[INFO] testing thread-scoped-1.0.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate thread-scoped 1.0.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate thread-scoped 1.0.2
[INFO] finished tweaking crates.io crate thread-scoped 1.0.2
[INFO] tweaked toml for crates.io crate thread-scoped 1.0.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate thread-scoped 1.0.2 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] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[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] b4dc55667cde42e68dea0e6ba252b5c08d1a702c60f8fcad68955878ae96318f
[INFO] running `Command { std: "docker" "start" "-a" "b4dc55667cde42e68dea0e6ba252b5c08d1a702c60f8fcad68955878ae96318f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4dc55667cde42e68dea0e6ba252b5c08d1a702c60f8fcad68955878ae96318f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4dc55667cde42e68dea0e6ba252b5c08d1a702c60f8fcad68955878ae96318f", kill_on_drop: false }`
[INFO] [stdout] b4dc55667cde42e68dea0e6ba252b5c08d1a702c60f8fcad68955878ae96318f
[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] fe48ceb1c37faac369c84916da1945b6fb545596dd303e8e2de13e0cf1b87ea2
[INFO] running `Command { std: "docker" "start" "-a" "fe48ceb1c37faac369c84916da1945b6fb545596dd303e8e2de13e0cf1b87ea2", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling thread-scoped v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "fe48ceb1c37faac369c84916da1945b6fb545596dd303e8e2de13e0cf1b87ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe48ceb1c37faac369c84916da1945b6fb545596dd303e8e2de13e0cf1b87ea2", kill_on_drop: false }`
[INFO] [stdout] fe48ceb1c37faac369c84916da1945b6fb545596dd303e8e2de13e0cf1b87ea2
[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] bb65888edf644c4bdc75be4cd9ea6a5f30db068c430f76da91128f84b89876a2
[INFO] running `Command { std: "docker" "start" "-a" "bb65888edf644c4bdc75be4cd9ea6a5f30db068c430f76da91128f84b89876a2", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling thread-scoped v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: never type fallback affects this call to an `unsafe` function
[INFO] [stdout]    --> src/lib.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             scoped(|| panic!()).join();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the type explicitly
[INFO] [stdout]     = warning: this changes meaning in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]     = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 137 |             scoped::<(), _>(|| panic!()).join();
[INFO] [stdout]     |                   +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: never type fallback affects this call to an `unsafe` function
[INFO] [stdout]    --> src/lib.rs:145:21
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let _ = scoped(|| panic!());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: specify the type explicitly
[INFO] [stdout]     = warning: this changes meaning in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let _ = scoped::<(), _>(|| panic!());
[INFO] [stdout]     |                           +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: thread-scoped v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "bb65888edf644c4bdc75be4cd9ea6a5f30db068c430f76da91128f84b89876a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb65888edf644c4bdc75be4cd9ea6a5f30db068c430f76da91128f84b89876a2", kill_on_drop: false }`
[INFO] [stdout] bb65888edf644c4bdc75be4cd9ea6a5f30db068c430f76da91128f84b89876a2
[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] db600627c27c10e2f2db49f30a67946627c2418e697f1522a1468e429da5247d
[INFO] running `Command { std: "docker" "start" "-a" "db600627c27c10e2f2db49f30a67946627c2418e697f1522a1468e429da5247d", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: never type fallback affects this call to an `unsafe` function
[INFO] [stderr]    --> src/lib.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             scoped(|| panic!()).join();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the type explicitly
[INFO] [stderr]     = warning: this changes meaning in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr]     = note: `#[warn(never_type_fallback_flowing_into_unsafe)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 137 |             scoped::<(), _>(|| panic!()).join();
[INFO] [stderr]     |                   +++++++++
[INFO] [stderr] 
[INFO] [stderr] warning: never type fallback affects this call to an `unsafe` function
[INFO] [stderr]    --> src/lib.rs:145:21
[INFO] [stderr]     |
[INFO] [stderr] 145 |             let _ = scoped(|| panic!());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: specify the type explicitly
[INFO] [stderr]     = warning: this changes meaning in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 145 |             let _ = scoped::<(), _>(|| panic!());
[INFO] [stderr]     |                           +++++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `thread-scoped` (lib test) generated 2 warnings (run `cargo fix --lib -p thread-scoped --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: thread-scoped v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/thread_scoped-397a95d745ce7322)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_join_success ... ok
[INFO] [stdout] test tests::test_scoped_success ... ok
[INFO] [stdout] test tests::test_scoped_panic - should panic ... ok
[INFO] [stdout] test tests::test_scoped_implicit_panic - should panic ... ok
[INFO] [stdout] test tests::test_scoped_stack ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests thread_scoped
[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" "db600627c27c10e2f2db49f30a67946627c2418e697f1522a1468e429da5247d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db600627c27c10e2f2db49f30a67946627c2418e697f1522a1468e429da5247d", kill_on_drop: false }`
[INFO] [stdout] db600627c27c10e2f2db49f30a67946627c2418e697f1522a1468e429da5247d
