[INFO] fetching crate mutation-monitor 0.1.0...
[INFO] testing mutation-monitor-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mutation-monitor 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mutation-monitor 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mutation-monitor 0.1.0
[INFO] tweaked toml for crates.io crate mutation-monitor 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutation-monitor 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mutation-monitor 0.1.0 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bf3c024a680b210f681f1b22dc6dfb314873acadc533c9ea6418f7e8640d90e
[INFO] running `Command { std: "docker" "start" "-a" "7bf3c024a680b210f681f1b22dc6dfb314873acadc533c9ea6418f7e8640d90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bf3c024a680b210f681f1b22dc6dfb314873acadc533c9ea6418f7e8640d90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bf3c024a680b210f681f1b22dc6dfb314873acadc533c9ea6418f7e8640d90e", kill_on_drop: false }`
[INFO] [stdout] 7bf3c024a680b210f681f1b22dc6dfb314873acadc533c9ea6418f7e8640d90e
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f3b105f90b225d29a31b5efc42ca45bcb8f85abc377b8d159b66a70957f81cf
[INFO] running `Command { std: "docker" "start" "-a" "0f3b105f90b225d29a31b5efc42ca45bcb8f85abc377b8d159b66a70957f81cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutation-monitor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "0f3b105f90b225d29a31b5efc42ca45bcb8f85abc377b8d159b66a70957f81cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f3b105f90b225d29a31b5efc42ca45bcb8f85abc377b8d159b66a70957f81cf", kill_on_drop: false }`
[INFO] [stdout] 0f3b105f90b225d29a31b5efc42ca45bcb8f85abc377b8d159b66a70957f81cf
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09ccd73ae37f361ad5e93fbb4a35844d387c43792513b1321e6a18a504ef31ea
[INFO] running `Command { std: "docker" "start" "-a" "09ccd73ae37f361ad5e93fbb4a35844d387c43792513b1321e6a18a504ef31ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutation-monitor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "09ccd73ae37f361ad5e93fbb4a35844d387c43792513b1321e6a18a504ef31ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09ccd73ae37f361ad5e93fbb4a35844d387c43792513b1321e6a18a504ef31ea", kill_on_drop: false }`
[INFO] [stdout] 09ccd73ae37f361ad5e93fbb4a35844d387c43792513b1321e6a18a504ef31ea
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f6b1f7e390f05dbc851a661556e048c1b09e8952f912f35b3c33471c6ca9aa80
[INFO] running `Command { std: "docker" "start" "-a" "f6b1f7e390f05dbc851a661556e048c1b09e8952f912f35b3c33471c6ca9aa80", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutation_monitor-2fd5745e21936d43)
[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 tests/tests.rs (/opt/rustwide/target/debug/deps/tests-fb57fbd13f93aa30)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::notifies_on_guard_drop ... ok
[INFO] [stdout] test tests::reentrant_notify_is_safe ... ok
[INFO] [stdout] test tests::notifies_on_change ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutation_monitor
[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" "f6b1f7e390f05dbc851a661556e048c1b09e8952f912f35b3c33471c6ca9aa80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b1f7e390f05dbc851a661556e048c1b09e8952f912f35b3c33471c6ca9aa80", kill_on_drop: false }`
[INFO] [stdout] f6b1f7e390f05dbc851a661556e048c1b09e8952f912f35b3c33471c6ca9aa80