Dec 06 12:01:20.136 INFO testing MainShayne233/concurrency_demo against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 12:01:20.136 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 12:01:20.468 INFO [stdout] 272675ba06871d8d68bddb06398bb5247dbb0ceb9ad65bf20480225dd9f91f27
Dec 06 12:01:20.470 INFO running `"docker" "start" "-a" "272675ba06871d8d68bddb06398bb5247dbb0ceb9ad65bf20480225dd9f91f27"`
Dec 06 12:01:21.981 INFO [stderr] usermod: no changes
Dec 06 12:01:22.040 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Dec 06 12:01:22.478 INFO [stderr] warning: field is never used: `workers`
Dec 06 12:01:22.478 INFO [stderr]  --> src/lib.rs:7:5
Dec 06 12:01:22.478 INFO [stderr]   |
Dec 06 12:01:22.478 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 06 12:01:22.478 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 06 12:01:22.478 INFO [stderr]   |
Dec 06 12:01:22.478 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 12:01:22.478 INFO [stderr] 
Dec 06 12:01:22.478 INFO [stderr] warning: field is never used: `id`
Dec 06 12:01:22.478 INFO [stderr]   --> src/lib.rs:49:5
Dec 06 12:01:22.478 INFO [stderr]    |
Dec 06 12:01:22.478 INFO [stderr] 49 |     id: usize,
Dec 06 12:01:22.478 INFO [stderr]    |     ^^^^^^^^^
Dec 06 12:01:22.478 INFO [stderr] 
Dec 06 12:01:22.478 INFO [stderr] warning: field is never used: `thread`
Dec 06 12:01:22.478 INFO [stderr]   --> src/lib.rs:50:5
Dec 06 12:01:22.478 INFO [stderr]    |
Dec 06 12:01:22.478 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Dec 06 12:01:22.478 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 12:01:22.478 INFO [stderr] 
Dec 06 12:01:24.297 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.29s
Dec 06 12:01:24.302 INFO [stderr] su: No module specific data is present
Dec 06 12:01:25.177 INFO running `"docker" "inspect" "272675ba06871d8d68bddb06398bb5247dbb0ceb9ad65bf20480225dd9f91f27"`
Dec 06 12:01:25.500 INFO running `"docker" "rm" "-f" "272675ba06871d8d68bddb06398bb5247dbb0ceb9ad65bf20480225dd9f91f27"`
Dec 06 12:01:25.775 INFO [stdout] 272675ba06871d8d68bddb06398bb5247dbb0ceb9ad65bf20480225dd9f91f27
Dec 06 12:01:25.778 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 12:01:26.229 INFO [stdout] f0b7c51c8f5fa63096a5a9c129fd09bfdb828111def38a017a6207970b5078cd
Dec 06 12:01:26.235 INFO running `"docker" "start" "-a" "f0b7c51c8f5fa63096a5a9c129fd09bfdb828111def38a017a6207970b5078cd"`
Dec 06 12:01:28.476 INFO [stderr] usermod: no changes
Dec 06 12:01:28.535 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Dec 06 12:01:29.124 INFO [stderr] warning: field is never used: `workers`
Dec 06 12:01:29.124 INFO [stderr]  --> src/lib.rs:7:5
Dec 06 12:01:29.124 INFO [stderr]   |
Dec 06 12:01:29.124 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 06 12:01:29.124 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 06 12:01:29.124 INFO [stderr]   |
Dec 06 12:01:29.124 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 12:01:29.124 INFO [stderr] 
Dec 06 12:01:29.124 INFO [stderr] warning: field is never used: `id`
Dec 06 12:01:29.124 INFO [stderr]   --> src/lib.rs:49:5
Dec 06 12:01:29.124 INFO [stderr]    |
Dec 06 12:01:29.124 INFO [stderr] 49 |     id: usize,
Dec 06 12:01:29.124 INFO [stderr]    |     ^^^^^^^^^
Dec 06 12:01:29.124 INFO [stderr] 
Dec 06 12:01:29.124 INFO [stderr] warning: field is never used: `thread`
Dec 06 12:01:29.124 INFO [stderr]   --> src/lib.rs:50:5
Dec 06 12:01:29.124 INFO [stderr]    |
Dec 06 12:01:29.124 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Dec 06 12:01:29.124 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 12:01:29.124 INFO [stderr] 
Dec 06 12:01:29.512 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
Dec 06 12:01:29.512 INFO [stderr] su: No module specific data is present
Dec 06 12:01:30.518 INFO running `"docker" "inspect" "f0b7c51c8f5fa63096a5a9c129fd09bfdb828111def38a017a6207970b5078cd"`
Dec 06 12:01:30.936 INFO running `"docker" "rm" "-f" "f0b7c51c8f5fa63096a5a9c129fd09bfdb828111def38a017a6207970b5078cd"`
Dec 06 12:01:31.147 INFO [stdout] f0b7c51c8f5fa63096a5a9c129fd09bfdb828111def38a017a6207970b5078cd
Dec 06 12:01:31.154 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 12:01:31.616 INFO [stdout] db55d34ca0bfb9016a286f24482d56f6b63d38d74129d87f2ce55545ffb23a62
Dec 06 12:01:31.618 INFO running `"docker" "start" "-a" "db55d34ca0bfb9016a286f24482d56f6b63d38d74129d87f2ce55545ffb23a62"`
Dec 06 12:01:33.038 INFO [stderr] usermod: no changes
Dec 06 12:01:33.092 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 06 12:01:33.096 INFO [stderr]      Running /target/debug/deps/concurrency_demo-6a646f088bb883ab
Dec 06 12:01:33.099 INFO [stdout] 
Dec 06 12:01:33.099 INFO [stdout] running 0 tests
Dec 06 12:01:33.099 INFO [stdout] 
Dec 06 12:01:33.099 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 12:01:33.099 INFO [stdout] 
Dec 06 12:01:33.104 INFO [stderr]      Running /target/debug/deps/main-d6421f95bd3812de
Dec 06 12:01:33.106 INFO [stdout] 
Dec 06 12:01:33.106 INFO [stdout] running 0 tests
Dec 06 12:01:33.106 INFO [stdout] 
Dec 06 12:01:33.106 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 12:01:33.106 INFO [stdout] 
Dec 06 12:01:33.108 INFO [stderr]    Doc-tests concurrency_demo
Dec 06 12:01:33.788 INFO [stdout] 
Dec 06 12:01:33.788 INFO [stdout] running 0 tests
Dec 06 12:01:33.788 INFO [stdout] 
Dec 06 12:01:33.788 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 12:01:33.788 INFO [stdout] 
Dec 06 12:01:33.796 INFO [stderr] su: No module specific data is present
Dec 06 12:01:34.351 INFO running `"docker" "inspect" "db55d34ca0bfb9016a286f24482d56f6b63d38d74129d87f2ce55545ffb23a62"`
Dec 06 12:01:34.636 INFO running `"docker" "rm" "-f" "db55d34ca0bfb9016a286f24482d56f6b63d38d74129d87f2ce55545ffb23a62"`
Dec 06 12:01:34.855 INFO [stdout] db55d34ca0bfb9016a286f24482d56f6b63d38d74129d87f2ce55545ffb23a62