Dec 14 08:16:41.287 INFO testing MainShayne233/concurrency_demo against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 08:16:41.287 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 08:16:41.639 INFO [stdout] 1d8d468e06fd3d5026ffc026b495d75ddce6fcff056783459b0e8fa7cf7b9e08
Dec 14 08:16:41.641 INFO running `"docker" "start" "-a" "1d8d468e06fd3d5026ffc026b495d75ddce6fcff056783459b0e8fa7cf7b9e08"`
Dec 14 08:16:43.119 INFO [stderr] usermod: no changes
Dec 14 08:16:43.203 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Dec 14 08:16:43.815 INFO [stderr] warning: field is never used: `workers`
Dec 14 08:16:43.815 INFO [stderr]  --> src/lib.rs:7:5
Dec 14 08:16:43.815 INFO [stderr]   |
Dec 14 08:16:43.815 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 14 08:16:43.815 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:43.815 INFO [stderr]   |
Dec 14 08:16:43.815 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 08:16:43.815 INFO [stderr] 
Dec 14 08:16:43.815 INFO [stderr] warning: field is never used: `id`
Dec 14 08:16:43.815 INFO [stderr]   --> src/lib.rs:49:5
Dec 14 08:16:43.815 INFO [stderr]    |
Dec 14 08:16:43.823 INFO [stderr] 49 |     id: usize,
Dec 14 08:16:43.823 INFO [stderr]    |     ^^^^^^^^^
Dec 14 08:16:43.823 INFO [stderr] 
Dec 14 08:16:43.823 INFO [stderr] warning: field is never used: `thread`
Dec 14 08:16:43.823 INFO [stderr]   --> src/lib.rs:50:5
Dec 14 08:16:43.823 INFO [stderr]    |
Dec 14 08:16:43.823 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Dec 14 08:16:43.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:43.823 INFO [stderr] 
Dec 14 08:16:45.653 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
Dec 14 08:16:45.666 INFO [stderr] su: No module specific data is present
Dec 14 08:16:46.904 INFO running `"docker" "inspect" "1d8d468e06fd3d5026ffc026b495d75ddce6fcff056783459b0e8fa7cf7b9e08"`
Dec 14 08:16:47.120 INFO running `"docker" "rm" "-f" "1d8d468e06fd3d5026ffc026b495d75ddce6fcff056783459b0e8fa7cf7b9e08"`
Dec 14 08:16:47.455 INFO [stdout] 1d8d468e06fd3d5026ffc026b495d75ddce6fcff056783459b0e8fa7cf7b9e08
Dec 14 08:16:47.461 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 08:16:48.024 INFO [stdout] f5f7728a1cdc83ddcbc5d4f3974a51e8049bf086c2e1e518ab1647b1c1f39b1b
Dec 14 08:16:48.027 INFO running `"docker" "start" "-a" "f5f7728a1cdc83ddcbc5d4f3974a51e8049bf086c2e1e518ab1647b1c1f39b1b"`
Dec 14 08:16:49.086 INFO [stderr] usermod: no changes
Dec 14 08:16:49.142 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Dec 14 08:16:49.863 INFO [stderr] warning: field is never used: `workers`
Dec 14 08:16:49.863 INFO [stderr]  --> src/lib.rs:7:5
Dec 14 08:16:49.863 INFO [stderr]   |
Dec 14 08:16:49.863 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 14 08:16:49.863 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:49.863 INFO [stderr]   |
Dec 14 08:16:49.863 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 08:16:49.863 INFO [stderr] 
Dec 14 08:16:49.863 INFO [stderr] warning: field is never used: `id`
Dec 14 08:16:49.863 INFO [stderr]   --> src/lib.rs:49:5
Dec 14 08:16:49.863 INFO [stderr]    |
Dec 14 08:16:49.863 INFO [stderr] 49 |     id: usize,
Dec 14 08:16:49.863 INFO [stderr]    |     ^^^^^^^^^
Dec 14 08:16:49.863 INFO [stderr] 
Dec 14 08:16:49.863 INFO [stderr] warning: field is never used: `thread`
Dec 14 08:16:49.863 INFO [stderr]   --> src/lib.rs:50:5
Dec 14 08:16:49.863 INFO [stderr]    |
Dec 14 08:16:49.863 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Dec 14 08:16:49.863 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 08:16:49.863 INFO [stderr] 
Dec 14 08:16:50.363 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
Dec 14 08:16:50.371 INFO [stderr] su: No module specific data is present
Dec 14 08:16:51.200 INFO running `"docker" "inspect" "f5f7728a1cdc83ddcbc5d4f3974a51e8049bf086c2e1e518ab1647b1c1f39b1b"`
Dec 14 08:16:51.485 INFO running `"docker" "rm" "-f" "f5f7728a1cdc83ddcbc5d4f3974a51e8049bf086c2e1e518ab1647b1c1f39b1b"`
Dec 14 08:16:51.711 INFO [stdout] f5f7728a1cdc83ddcbc5d4f3974a51e8049bf086c2e1e518ab1647b1c1f39b1b
Dec 14 08:16:51.770 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 08:16:52.165 INFO [stdout] 8aa7140c14f67e092d6c751f449181bf854f09c49c79f0d794fc84556e260ae7
Dec 14 08:16:52.167 INFO running `"docker" "start" "-a" "8aa7140c14f67e092d6c751f449181bf854f09c49c79f0d794fc84556e260ae7"`
Dec 14 08:16:53.418 INFO [stderr] usermod: no changes
Dec 14 08:16:53.463 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 14 08:16:53.469 INFO [stderr]      Running /target/debug/deps/concurrency_demo-31869b4e876d60ff
Dec 14 08:16:53.478 INFO [stderr]      Running /target/debug/deps/main-237a8ddd66df7621
Dec 14 08:16:53.479 INFO [stdout] 
Dec 14 08:16:53.479 INFO [stdout] running 0 tests
Dec 14 08:16:53.479 INFO [stdout] 
Dec 14 08:16:53.479 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 08:16:53.479 INFO [stdout] 
Dec 14 08:16:53.495 INFO [stdout] 
Dec 14 08:16:53.495 INFO [stderr]    Doc-tests concurrency_demo
Dec 14 08:16:53.495 INFO [stdout] running 0 tests
Dec 14 08:16:53.495 INFO [stdout] 
Dec 14 08:16:53.495 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 08:16:53.495 INFO [stdout] 
Dec 14 08:16:54.255 INFO [stdout] 
Dec 14 08:16:54.255 INFO [stdout] running 0 tests
Dec 14 08:16:54.255 INFO [stdout] 
Dec 14 08:16:54.255 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 08:16:54.255 INFO [stdout] 
Dec 14 08:16:54.262 INFO [stderr] su: No module specific data is present
Dec 14 08:16:55.013 INFO running `"docker" "inspect" "8aa7140c14f67e092d6c751f449181bf854f09c49c79f0d794fc84556e260ae7"`
Dec 14 08:16:55.377 INFO running `"docker" "rm" "-f" "8aa7140c14f67e092d6c751f449181bf854f09c49c79f0d794fc84556e260ae7"`
Dec 14 08:16:55.667 INFO [stdout] 8aa7140c14f67e092d6c751f449181bf854f09c49c79f0d794fc84556e260ae7