[INFO] cloning repository https://github.com/sunnywhy/rust-thread-pool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunnywhy/rust-thread-pool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunnywhy%2Frust-thread-pool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunnywhy%2Frust-thread-pool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6227f5fded0d0cecad295c6151b1fb82c4c45acf
[INFO] testing sunnywhy/rust-thread-pool against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunnywhy%2Frust-thread-pool" "/workspace/builds/worker-18/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sunnywhy/rust-thread-pool on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sunnywhy/rust-thread-pool
[INFO] finished tweaking git repo https://github.com/sunnywhy/rust-thread-pool
[INFO] tweaked toml for git repo https://github.com/sunnywhy/rust-thread-pool written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate git repo https://github.com/sunnywhy/rust-thread-pool already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16aae8df70d9b0c49f530e74869a17be8bd9a8c38f42b31b1fa1bb7293d07ec5
[INFO] running `Command { std: "docker" "start" "-a" "16aae8df70d9b0c49f530e74869a17be8bd9a8c38f42b31b1fa1bb7293d07ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16aae8df70d9b0c49f530e74869a17be8bd9a8c38f42b31b1fa1bb7293d07ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16aae8df70d9b0c49f530e74869a17be8bd9a8c38f42b31b1fa1bb7293d07ec5", kill_on_drop: false }`
[INFO] [stdout] 16aae8df70d9b0c49f530e74869a17be8bd9a8c38f42b31b1fa1bb7293d07ec5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cdf1cd7f137e4589c08871ce2145efefdbb80b2a511fd6c21dc155d0567203a
[INFO] running `Command { std: "docker" "start" "-a" "9cdf1cd7f137e4589c08871ce2145efefdbb80b2a511fd6c21dc155d0567203a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rust_thread_pool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `MutexGuard` that must be used
[INFO] [stdout]   --> src/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             self.empty_trigger.lock().expect("Unable to notify all joining threads");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.17s
[INFO] running `Command { std: "docker" "inspect" "9cdf1cd7f137e4589c08871ce2145efefdbb80b2a511fd6c21dc155d0567203a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cdf1cd7f137e4589c08871ce2145efefdbb80b2a511fd6c21dc155d0567203a", kill_on_drop: false }`
[INFO] [stdout] 9cdf1cd7f137e4589c08871ce2145efefdbb80b2a511fd6c21dc155d0567203a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8eb6b33eb6a1084ba3e1c84fffde5dca4d1e1ec1d18c1c29cdfc6cecb96c3278
[INFO] running `Command { std: "docker" "start" "-a" "8eb6b33eb6a1084ba3e1c84fffde5dca4d1e1ec1d18c1c29cdfc6cecb96c3278", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_thread_pool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `MutexGuard` that must be used
[INFO] [stdout]   --> src/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             self.empty_trigger.lock().expect("Unable to notify all joining threads");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "8eb6b33eb6a1084ba3e1c84fffde5dca4d1e1ec1d18c1c29cdfc6cecb96c3278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eb6b33eb6a1084ba3e1c84fffde5dca4d1e1ec1d18c1c29cdfc6cecb96c3278", kill_on_drop: false }`
[INFO] [stdout] 8eb6b33eb6a1084ba3e1c84fffde5dca4d1e1ec1d18c1c29cdfc6cecb96c3278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c5660d56f4705a2fa8f6c1a61e6da6c8ad3bf3651da9fd036ad34e7c15c29795
[INFO] running `Command { std: "docker" "start" "-a" "c5660d56f4705a2fa8f6c1a61e6da6c8ad3bf3651da9fd036ad34e7c15c29795", kill_on_drop: false }`
[INFO] [stderr] warning: unused `MutexGuard` that must be used
[INFO] [stderr]   --> src/main.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             self.empty_trigger.lock().expect("Unable to notify all joining threads");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if unused the Mutex will immediately unlock
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_thread_pool` (bin "rust_thread_pool" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_thread_pool-7fe072b5d65744be)
[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" "c5660d56f4705a2fa8f6c1a61e6da6c8ad3bf3651da9fd036ad34e7c15c29795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5660d56f4705a2fa8f6c1a61e6da6c8ad3bf3651da9fd036ad34e7c15c29795", kill_on_drop: false }`
[INFO] [stdout] c5660d56f4705a2fa8f6c1a61e6da6c8ad3bf3651da9fd036ad34e7c15c29795