[INFO] fetching crate qutex 0.2.6...
[INFO] testing qutex-0.2.6 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate qutex 0.2.6 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate qutex 0.2.6
[INFO] finished tweaking crates.io crate qutex 0.2.6
[INFO] tweaked toml for crates.io crate qutex 0.2.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qutex 0.2.6 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] crate crates.io crate qutex 0.2.6 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e30aebf5f462d0ba0d56b4e5d128342cebe5fea1dd2c6e232280068e88a91e60
[INFO] running `Command { std: "docker" "start" "-a" "e30aebf5f462d0ba0d56b4e5d128342cebe5fea1dd2c6e232280068e88a91e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e30aebf5f462d0ba0d56b4e5d128342cebe5fea1dd2c6e232280068e88a91e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e30aebf5f462d0ba0d56b4e5d128342cebe5fea1dd2c6e232280068e88a91e60", kill_on_drop: false }`
[INFO] [stdout] e30aebf5f462d0ba0d56b4e5d128342cebe5fea1dd2c6e232280068e88a91e60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 14084ec7b07612c3e6faf1575d637299512197d88943735b0a704157941c3cd9
[INFO] running `Command { std: "docker" "start" "-a" "14084ec7b07612c3e6faf1575d637299512197d88943735b0a704157941c3cd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling qutex v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `forget` is never used
[INFO] [stdout]   --> src/qrw_lock.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | trait Guard<T>
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 80 |     unsafe fn forget(self) {
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "14084ec7b07612c3e6faf1575d637299512197d88943735b0a704157941c3cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14084ec7b07612c3e6faf1575d637299512197d88943735b0a704157941c3cd9", kill_on_drop: false }`
[INFO] [stdout] 14084ec7b07612c3e6faf1575d637299512197d88943735b0a704157941c3cd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8eba282c8dff0c4dfa56e2aa2f9fc06279dd20aeb0942841f631fa3b2de13bea
[INFO] running `Command { std: "docker" "start" "-a" "8eba282c8dff0c4dfa56e2aa2f9fc06279dd20aeb0942841f631fa3b2de13bea", kill_on_drop: false }`
[INFO] [stdout] warning: method `forget` is never used
[INFO] [stdout]   --> src/qrw_lock.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | trait Guard<T>
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 80 |     unsafe fn forget(self) {
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling qutex v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `forget` is never used
[INFO] [stdout]   --> src/qrw_lock.rs:80:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | trait Guard<T>
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 80 |     unsafe fn forget(self) {
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "8eba282c8dff0c4dfa56e2aa2f9fc06279dd20aeb0942841f631fa3b2de13bea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eba282c8dff0c4dfa56e2aa2f9fc06279dd20aeb0942841f631fa3b2de13bea", kill_on_drop: false }`
[INFO] [stdout] 8eba282c8dff0c4dfa56e2aa2f9fc06279dd20aeb0942841f631fa3b2de13bea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bab2ff323c010d096cc0beb9402bc0217c85a4078862a786cd5fd409a6e173cb
[INFO] running `Command { std: "docker" "start" "-a" "bab2ff323c010d096cc0beb9402bc0217c85a4078862a786cd5fd409a6e173cb", kill_on_drop: false }`
[INFO] [stderr] warning: method `forget` is never used
[INFO] [stderr]   --> src/qrw_lock.rs:80:15
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 74 | trait Guard<T>
[INFO] [stdout] running 8 tests
[INFO] [stderr]    |       ----- method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 80 |     unsafe fn forget(self) {
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `qutex` (lib) generated 1 warning
[INFO] [stderr] warning: `qutex` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/qutex-b467d0db3a78621b)
[INFO] [stdout] test qutex::tests::explicit_unlock ... ok
[INFO] [stdout] test qrw_lock::tests::simple ... ok
[INFO] [stdout] test qutex::tests::future_guard_drop ... ok
[INFO] [stdout] test qutex::tests::simple ... ok
[INFO] [stdout] test qrw_lock::tests::concurrent ... ok
[INFO] [stdout] test qutex::tests::concurrent ... ok
[INFO] [stdout] test qrw_lock::tests::multiple_upgrades ... ok
[INFO] [stdout] test qrw_lock::tests::read_write_thread_loop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests qutex
[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" "bab2ff323c010d096cc0beb9402bc0217c85a4078862a786cd5fd409a6e173cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bab2ff323c010d096cc0beb9402bc0217c85a4078862a786cd5fd409a6e173cb", kill_on_drop: false }`
[INFO] [stdout] bab2ff323c010d096cc0beb9402bc0217c85a4078862a786cd5fd409a6e173cb