[INFO] fetching crate spl 0.4.2...
[INFO] testing spl-0.4.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spl 0.4.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate spl 0.4.2
[INFO] finished tweaking crates.io crate spl 0.4.2
[INFO] tweaked toml for crates.io crate spl 0.4.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spl 0.4.2 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] crate crates.io crate spl 0.4.2 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] e39492685989d72ba3bd7e708a4de6eca3fa985d7fce9a00581a7e879f3eabba
[INFO] running `Command { std: "docker" "start" "-a" "e39492685989d72ba3bd7e708a4de6eca3fa985d7fce9a00581a7e879f3eabba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e39492685989d72ba3bd7e708a4de6eca3fa985d7fce9a00581a7e879f3eabba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e39492685989d72ba3bd7e708a4de6eca3fa985d7fce9a00581a7e879f3eabba", kill_on_drop: false }`
[INFO] [stdout] e39492685989d72ba3bd7e708a4de6eca3fa985d7fce9a00581a7e879f3eabba
[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] cb0d8255ec71d43d4a9f00dd77c45cf1f71056a62d444f04418ad560b1e780e0
[INFO] running `Command { std: "docker" "start" "-a" "cb0d8255ec71d43d4a9f00dd77c45cf1f71056a62d444f04418ad560b1e780e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling multicall v0.1.4
[INFO] [stderr]    Compiling readformat v0.1.2
[INFO] [stderr]    Compiling spl v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<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] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<'_, T> {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn lock(&self) -> RwLockWriteGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn lock(&self) -> RwLockWriteGuard<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "cb0d8255ec71d43d4a9f00dd77c45cf1f71056a62d444f04418ad560b1e780e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb0d8255ec71d43d4a9f00dd77c45cf1f71056a62d444f04418ad560b1e780e0", kill_on_drop: false }`
[INFO] [stdout] cb0d8255ec71d43d4a9f00dd77c45cf1f71056a62d444f04418ad560b1e780e0
[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] 35d708f791e689b5399d1f35c4a96558fc89e28bfffc6860bb07fe0586038a91
[INFO] running `Command { std: "docker" "start" "-a" "35d708f791e689b5399d1f35c4a96558fc89e28bfffc6860bb07fe0586038a91", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<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] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<'_, T> {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn lock(&self) -> RwLockWriteGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn lock(&self) -> RwLockWriteGuard<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling spl v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<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] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<'_, T> {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/mutex.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn lock(&self) -> RwLockWriteGuard<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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn lock(&self) -> RwLockWriteGuard<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "35d708f791e689b5399d1f35c4a96558fc89e28bfffc6860bb07fe0586038a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35d708f791e689b5399d1f35c4a96558fc89e28bfffc6860bb07fe0586038a91", kill_on_drop: false }`
[INFO] [stdout] 35d708f791e689b5399d1f35c4a96558fc89e28bfffc6860bb07fe0586038a91
[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] c010514cf1a05330c13583182ee650069c95f13e39f4e2191f08ad42ffe47e92
[INFO] running `Command { std: "docker" "start" "-a" "c010514cf1a05330c13583182ee650069c95f13e39f4e2191f08ad42ffe47e92", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/mutex.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<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] 14 |     pub fn lock_ro(&self) -> RwLockReadGuard<'_, T> {
[INFO] [stderr]    |                                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/mutex.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn lock(&self) -> RwLockWriteGuard<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] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn lock(&self) -> RwLockWriteGuard<'_, T> {
[INFO] [stderr]    |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: `spl` (lib) generated 2 warnings (run `cargo fix --lib -p spl` to apply 2 suggestions)
[INFO] [stderr] warning: `spl` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/spl-ceb14549dfd1305f)
[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]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/spl-7b49596e63ebeaf0)
[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 spl
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c010514cf1a05330c13583182ee650069c95f13e39f4e2191f08ad42ffe47e92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c010514cf1a05330c13583182ee650069c95f13e39f4e2191f08ad42ffe47e92", kill_on_drop: false }`
[INFO] [stdout] c010514cf1a05330c13583182ee650069c95f13e39f4e2191f08ad42ffe47e92
