Dec 14 08:16:47.544 INFO testing MainShayne233/concurrency_demo against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 08:16:47.544 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 08:16:47.913 INFO [stdout] a02ad6f51217659e5a575815b5d56c366300e3568b5051bcea62b2845e26ee7f
Dec 14 08:16:47.913 INFO running `"docker" "start" "-a" "a02ad6f51217659e5a575815b5d56c366300e3568b5051bcea62b2845e26ee7f"`
Dec 14 08:16:49.098 INFO [stderr] usermod: no changes
Dec 14 08:16:49.183 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Dec 14 08:16:49.755 INFO [stderr] warning: field is never used: `workers`
Dec 14 08:16:49.755 INFO [stderr]  --> src/lib.rs:7:5
Dec 14 08:16:49.755 INFO [stderr]   |
Dec 14 08:16:49.755 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 14 08:16:49.755 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:49.755 INFO [stderr]   |
Dec 14 08:16:49.755 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 08:16:49.755 INFO [stderr] 
Dec 14 08:16:49.755 INFO [stderr] warning: field is never used: `id`
Dec 14 08:16:49.755 INFO [stderr]   --> src/lib.rs:49:5
Dec 14 08:16:49.755 INFO [stderr]    |
Dec 14 08:16:49.755 INFO [stderr] 49 |     id: usize,
Dec 14 08:16:49.755 INFO [stderr]    |     ^^^^^^^^^
Dec 14 08:16:49.755 INFO [stderr] 
Dec 14 08:16:49.755 INFO [stderr] warning: field is never used: `thread`
Dec 14 08:16:49.755 INFO [stderr]   --> src/lib.rs:50:5
Dec 14 08:16:49.755 INFO [stderr]    |
Dec 14 08:16:49.755 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Dec 14 08:16:49.755 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:49.755 INFO [stderr] 
Dec 14 08:16:51.705 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.55s
Dec 14 08:16:51.706 INFO [stderr] su: No module specific data is present
Dec 14 08:16:52.243 INFO running `"docker" "inspect" "a02ad6f51217659e5a575815b5d56c366300e3568b5051bcea62b2845e26ee7f"`
Dec 14 08:16:52.559 INFO running `"docker" "rm" "-f" "a02ad6f51217659e5a575815b5d56c366300e3568b5051bcea62b2845e26ee7f"`
Dec 14 08:16:52.911 INFO [stdout] a02ad6f51217659e5a575815b5d56c366300e3568b5051bcea62b2845e26ee7f
Dec 14 08:16:52.919 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 08:16:53.305 INFO [stdout] 9f7b47e5ba2db67d2b857d10c2a28e889cf96e5f50c4a37a13ae8cc0dac75303
Dec 14 08:16:53.311 INFO running `"docker" "start" "-a" "9f7b47e5ba2db67d2b857d10c2a28e889cf96e5f50c4a37a13ae8cc0dac75303"`
Dec 14 08:16:54.631 INFO [stderr] usermod: no changes
Dec 14 08:16:54.700 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Dec 14 08:16:55.791 INFO [stderr] warning: field is never used: `workers`
Dec 14 08:16:55.791 INFO [stderr]  --> src/lib.rs:7:5
Dec 14 08:16:55.791 INFO [stderr]   |
Dec 14 08:16:55.791 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 14 08:16:55.791 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:55.791 INFO [stderr]   |
Dec 14 08:16:55.791 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 08:16:55.791 INFO [stderr] 
Dec 14 08:16:55.791 INFO [stderr] warning: field is never used: `id`
Dec 14 08:16:55.791 INFO [stderr]   --> src/lib.rs:49:5
Dec 14 08:16:55.791 INFO [stderr]    |
Dec 14 08:16:55.791 INFO [stderr] 49 |     id: usize,
Dec 14 08:16:55.791 INFO [stderr]    |     ^^^^^^^^^
Dec 14 08:16:55.791 INFO [stderr] 
Dec 14 08:16:55.791 INFO [stderr] warning: field is never used: `thread`
Dec 14 08:16:55.791 INFO [stderr]   --> src/lib.rs:50:5
Dec 14 08:16:55.791 INFO [stderr]    |
Dec 14 08:16:55.791 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Dec 14 08:16:55.791 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:55.791 INFO [stderr] 
Dec 14 08:16:56.407 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
Dec 14 08:16:56.407 INFO [stderr] su: No module specific data is present
Dec 14 08:16:56.837 INFO running `"docker" "inspect" "9f7b47e5ba2db67d2b857d10c2a28e889cf96e5f50c4a37a13ae8cc0dac75303"`
Dec 14 08:16:57.031 INFO running `"docker" "rm" "-f" "9f7b47e5ba2db67d2b857d10c2a28e889cf96e5f50c4a37a13ae8cc0dac75303"`
Dec 14 08:16:57.239 INFO [stdout] 9f7b47e5ba2db67d2b857d10c2a28e889cf96e5f50c4a37a13ae8cc0dac75303
Dec 14 08:16:57.243 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 08:16:57.595 INFO [stdout] 9b5864d215ddf6e11f83e7c004829ae54b8a29b7b78434c26f86923e73edb98e
Dec 14 08:16:57.598 INFO running `"docker" "start" "-a" "9b5864d215ddf6e11f83e7c004829ae54b8a29b7b78434c26f86923e73edb98e"`
Dec 14 08:16:58.587 INFO [stderr] usermod: no changes
Dec 14 08:16:58.624 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 14 08:16:58.624 INFO [stderr]      Running /target/debug/deps/concurrency_demo-ac00e739a4055f4d
Dec 14 08:16:58.629 INFO [stdout] 
Dec 14 08:16:58.629 INFO [stdout] running 0 tests
Dec 14 08:16:58.629 INFO [stdout] 
Dec 14 08:16:58.629 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 08:16:58.629 INFO [stdout] 
Dec 14 08:16:58.632 INFO [stderr]      Running /target/debug/deps/main-849973bf76a4cc8c
Dec 14 08:16:58.634 INFO [stdout] 
Dec 14 08:16:58.634 INFO [stdout] running 0 tests
Dec 14 08:16:58.634 INFO [stdout] 
Dec 14 08:16:58.634 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 08:16:58.634 INFO [stdout] 
Dec 14 08:16:58.634 INFO [stderr]    Doc-tests concurrency_demo
Dec 14 08:16:59.363 INFO [stdout] 
Dec 14 08:16:59.363 INFO [stdout] running 0 tests
Dec 14 08:16:59.363 INFO [stdout] 
Dec 14 08:16:59.363 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 08:16:59.363 INFO [stdout] 
Dec 14 08:16:59.382 INFO [stderr] su: No module specific data is present
Dec 14 08:16:59.933 INFO running `"docker" "inspect" "9b5864d215ddf6e11f83e7c004829ae54b8a29b7b78434c26f86923e73edb98e"`
Dec 14 08:17:00.164 INFO running `"docker" "rm" "-f" "9b5864d215ddf6e11f83e7c004829ae54b8a29b7b78434c26f86923e73edb98e"`
Dec 14 08:17:00.440 INFO [stdout] 9b5864d215ddf6e11f83e7c004829ae54b8a29b7b78434c26f86923e73edb98e