[INFO] fetching crate spawn_groups 1.1.0...
[INFO] testing spawn_groups-1.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spawn_groups 1.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate spawn_groups 1.1.0
[INFO] finished tweaking crates.io crate spawn_groups 1.1.0
[INFO] tweaked toml for crates.io crate spawn_groups 1.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spawn_groups 1.1.0 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] crate crates.io crate spawn_groups 1.1.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] bd2cbd8a48a9b8ad69727091bf89b321bfeec8d55e84f0ff8c391013894a4705
[INFO] running `Command { std: "docker" "start" "-a" "bd2cbd8a48a9b8ad69727091bf89b321bfeec8d55e84f0ff8c391013894a4705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd2cbd8a48a9b8ad69727091bf89b321bfeec8d55e84f0ff8c391013894a4705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd2cbd8a48a9b8ad69727091bf89b321bfeec8d55e84f0ff8c391013894a4705", kill_on_drop: false }`
[INFO] [stdout] bd2cbd8a48a9b8ad69727091bf89b321bfeec8d55e84f0ff8c391013894a4705
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3cbca4eca773588734c9132ce1e0ce7554c4626ae9a6daa5a65fe5d79e03d6cd
[INFO] running `Command { std: "docker" "start" "-a" "3cbca4eca773588734c9132ce1e0ce7554c4626ae9a6daa5a65fe5d79e03d6cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-lite v2.6.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling async-lock v3.4.0
[INFO] [stderr]    Compiling spawn_groups v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/shared/mutex.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<T> {
[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] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<'_, T> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `Command { std: "docker" "inspect" "3cbca4eca773588734c9132ce1e0ce7554c4626ae9a6daa5a65fe5d79e03d6cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cbca4eca773588734c9132ce1e0ce7554c4626ae9a6daa5a65fe5d79e03d6cd", kill_on_drop: false }`
[INFO] [stdout] 3cbca4eca773588734c9132ce1e0ce7554c4626ae9a6daa5a65fe5d79e03d6cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4c2999e61059a00c6338d48f461dec5070efe89a395fdb92a387af197a0fdb98
[INFO] running `Command { std: "docker" "start" "-a" "4c2999e61059a00c6338d48f461dec5070efe89a395fdb92a387af197a0fdb98", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/shared/mutex.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<T> {
[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] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<'_, T> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling spawn_groups v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/shared/mutex.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<T> {
[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] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<'_, T> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "4c2999e61059a00c6338d48f461dec5070efe89a395fdb92a387af197a0fdb98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c2999e61059a00c6338d48f461dec5070efe89a395fdb92a387af197a0fdb98", kill_on_drop: false }`
[INFO] [stdout] 4c2999e61059a00c6338d48f461dec5070efe89a395fdb92a387af197a0fdb98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 56ed7e8453f41da163cb53312c7835a5c4a5ce984f265015146ac30dfc36fb31
[INFO] running `Command { std: "docker" "start" "-a" "56ed7e8453f41da163cb53312c7835a5c4a5ce984f265015146ac30dfc36fb31", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/shared/mutex.rs:12:24
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<T> {
[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] 12 |     pub(crate) fn lock(&self) -> StdMutexGuard<'_, T> {
[INFO] [stderr]    |                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: `spawn_groups` (lib) generated 1 warning (run `cargo fix --lib -p spawn_groups` to apply 1 suggestion)
[INFO] [stderr] warning: `spawn_groups` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/spawn_groups-7874ecd8db478876)
[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]    Doc-tests spawn_groups
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/lib.rs - (line 14) ... ignored
[INFO] [stdout] test src/meta_types.rs - meta_types::PhantomData (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 123) ... ok
[INFO] [stdout] test src/executors/future_executor.rs - executors::future_executor::block_on (line 12) ... ok
[INFO] [stdout] test src/lib.rs - with_type_spawn_group (line 211) ... ok
[INFO] [stdout] test src/lib.rs - with_err_type_spawn_group (line 322) ... ok
[INFO] [stdout] test src/lib.rs - with_spawn_group (line 267) ... ok
[INFO] [stdout] test src/lib.rs - with_err_spawn_group (line 423) ... ok
[INFO] [stdout] test src/lib.rs - with_discarding_spawn_group (line 519) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.78s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "56ed7e8453f41da163cb53312c7835a5c4a5ce984f265015146ac30dfc36fb31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ed7e8453f41da163cb53312c7835a5c4a5ce984f265015146ac30dfc36fb31", kill_on_drop: false }`
[INFO] [stdout] 56ed7e8453f41da163cb53312c7835a5c4a5ce984f265015146ac30dfc36fb31
