[INFO] cloning repository https://github.com/bingli224/rust_test_thrd_mutex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bingli224/rust_test_thrd_mutex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbingli224%2Frust_test_thrd_mutex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbingli224%2Frust_test_thrd_mutex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a91c5820af426871ea424b0e92f70eb39f3b3c2f
[INFO] testing bingli224/rust_test_thrd_mutex against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbingli224%2Frust_test_thrd_mutex" "/workspace/builds/worker-33/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-33/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bingli224/rust_test_thrd_mutex on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bingli224/rust_test_thrd_mutex
[INFO] finished tweaking git repo https://github.com/bingli224/rust_test_thrd_mutex
[INFO] tweaked toml for git repo https://github.com/bingli224/rust_test_thrd_mutex written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate git repo https://github.com/bingli224/rust_test_thrd_mutex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e89ad016403839afe854e5c674eb482ed9d9c84781db653a7413ee59b16516f
[INFO] running `Command { std: "docker" "start" "-a" "3e89ad016403839afe854e5c674eb482ed9d9c84781db653a7413ee59b16516f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e89ad016403839afe854e5c674eb482ed9d9c84781db653a7413ee59b16516f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e89ad016403839afe854e5c674eb482ed9d9c84781db653a7413ee59b16516f", kill_on_drop: false }`
[INFO] [stdout] 3e89ad016403839afe854e5c674eb482ed9d9c84781db653a7413ee59b16516f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4bd47d32354e345076b1199d286b43e8653a00633c5c0f51586e706e38a25a8
[INFO] running `Command { std: "docker" "start" "-a" "e4bd47d32354e345076b1199d286b43e8653a00633c5c0f51586e706e38a25a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling pulling_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.77s
[INFO] running `Command { std: "docker" "inspect" "e4bd47d32354e345076b1199d286b43e8653a00633c5c0f51586e706e38a25a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4bd47d32354e345076b1199d286b43e8653a00633c5c0f51586e706e38a25a8", kill_on_drop: false }`
[INFO] [stdout] e4bd47d32354e345076b1199d286b43e8653a00633c5c0f51586e706e38a25a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8282c222718d5c2d5c9ed05d59bf1a63019b3a0c2d5ede454f2b19fd0a20009c
[INFO] running `Command { std: "docker" "start" "-a" "8282c222718d5c2d5c9ed05d59bf1a63019b3a0c2d5ede454f2b19fd0a20009c", kill_on_drop: false }`
[INFO] [stderr]    Compiling pulling_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `io::Write`, `io::stdout`, `thread::sleep`, `time::Duration`
[INFO] [stdout]   --> src/test.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             thread::sleep,
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 11 |             time::Duration,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout] 12 | 
[INFO] [stdout] 13 |             io::Write,
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout] 14 |             io::stdout,
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]   --> src/test.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     use rand::Rng;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "8282c222718d5c2d5c9ed05d59bf1a63019b3a0c2d5ede454f2b19fd0a20009c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8282c222718d5c2d5c9ed05d59bf1a63019b3a0c2d5ede454f2b19fd0a20009c", kill_on_drop: false }`
[INFO] [stdout] 8282c222718d5c2d5c9ed05d59bf1a63019b3a0c2d5ede454f2b19fd0a20009c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b9374465c8339e49fdfd1f34d0480d523b6931be53d37384755752fa363b67a7
[INFO] running `Command { std: "docker" "start" "-a" "b9374465c8339e49fdfd1f34d0480d523b6931be53d37384755752fa363b67a7", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `io::Write`, `io::stdout`, `thread::sleep`, `time::Duration`
[INFO] [stderr]   --> src/test.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |             thread::sleep,
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr] 11 |             time::Duration,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^
[INFO] [stderr] 12 | 
[INFO] [stderr] 13 |             io::Write,
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr] 14 |             io::stdout,
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]   --> src/test.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     use rand::Rng;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `pulling_game` (bin "pulling_game" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pulling_game-ade4b8ec7a0ef905)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::tests::test_play ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 20.16s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b9374465c8339e49fdfd1f34d0480d523b6931be53d37384755752fa363b67a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9374465c8339e49fdfd1f34d0480d523b6931be53d37384755752fa363b67a7", kill_on_drop: false }`
[INFO] [stdout] b9374465c8339e49fdfd1f34d0480d523b6931be53d37384755752fa363b67a7