Nov 17 13:44:46.544 INFO testing MainShayne233/concurrency_demo against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 17 13:44:46.546 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 17 13:44:46.971 INFO [stdout] 2684abec6a91e6b665534efed51efae77f5ee54362f103a36790322a8cf861ab
Nov 17 13:44:46.979 INFO running `"docker" "start" "-a" "2684abec6a91e6b665534efed51efae77f5ee54362f103a36790322a8cf861ab"`
Nov 17 13:44:47.859 INFO [stderr] usermod: no changes
Nov 17 13:44:47.924 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Nov 17 13:44:48.319 INFO [stderr] warning: field is never used: `workers`
Nov 17 13:44:48.319 INFO [stderr]  --> src/lib.rs:7:5
Nov 17 13:44:48.319 INFO [stderr]   |
Nov 17 13:44:48.319 INFO [stderr] 7 |     workers: Vec<Worker>,
Nov 17 13:44:48.319 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Nov 17 13:44:48.319 INFO [stderr]   |
Nov 17 13:44:48.319 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 17 13:44:48.319 INFO [stderr] 
Nov 17 13:44:48.319 INFO [stderr] warning: field is never used: `id`
Nov 17 13:44:48.319 INFO [stderr]   --> src/lib.rs:49:5
Nov 17 13:44:48.319 INFO [stderr]    |
Nov 17 13:44:48.319 INFO [stderr] 49 |     id: usize,
Nov 17 13:44:48.319 INFO [stderr]    |     ^^^^^^^^^
Nov 17 13:44:48.319 INFO [stderr] 
Nov 17 13:44:48.319 INFO [stderr] warning: field is never used: `thread`
Nov 17 13:44:48.319 INFO [stderr]   --> src/lib.rs:50:5
Nov 17 13:44:48.319 INFO [stderr]    |
Nov 17 13:44:48.319 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Nov 17 13:44:48.319 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 13:44:48.319 INFO [stderr] 
Nov 17 13:44:50.079 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.17s
Nov 17 13:44:50.079 INFO [stderr] su: No module specific data is present
Nov 17 13:44:50.692 INFO running `"docker" "inspect" "2684abec6a91e6b665534efed51efae77f5ee54362f103a36790322a8cf861ab"`
Nov 17 13:44:50.938 INFO running `"docker" "rm" "-f" "2684abec6a91e6b665534efed51efae77f5ee54362f103a36790322a8cf861ab"`
Nov 17 13:44:51.301 INFO [stdout] 2684abec6a91e6b665534efed51efae77f5ee54362f103a36790322a8cf861ab
Nov 17 13:44:51.303 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 17 13:44:51.809 INFO [stdout] 0311db0887c745eda5dc61b1e99385bce4cc6a8a0d894fb041eef53554d74759
Nov 17 13:44:51.813 INFO running `"docker" "start" "-a" "0311db0887c745eda5dc61b1e99385bce4cc6a8a0d894fb041eef53554d74759"`
Nov 17 13:44:52.649 INFO [stderr] usermod: no changes
Nov 17 13:44:52.715 INFO [stderr]    Compiling concurrency_demo v0.1.0 (/source)
Nov 17 13:44:53.443 INFO [stderr] warning: field is never used: `workers`
Nov 17 13:44:53.443 INFO [stderr]  --> src/lib.rs:7:5
Nov 17 13:44:53.443 INFO [stderr]   |
Nov 17 13:44:53.443 INFO [stderr] 7 |     workers: Vec<Worker>,
Nov 17 13:44:53.443 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Nov 17 13:44:53.443 INFO [stderr]   |
Nov 17 13:44:53.443 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 17 13:44:53.443 INFO [stderr] 
Nov 17 13:44:53.443 INFO [stderr] warning: field is never used: `id`
Nov 17 13:44:53.443 INFO [stderr]   --> src/lib.rs:49:5
Nov 17 13:44:53.443 INFO [stderr]    |
Nov 17 13:44:53.443 INFO [stderr] 49 |     id: usize,
Nov 17 13:44:53.443 INFO [stderr]    |     ^^^^^^^^^
Nov 17 13:44:53.443 INFO [stderr] 
Nov 17 13:44:53.443 INFO [stderr] warning: field is never used: `thread`
Nov 17 13:44:53.443 INFO [stderr]   --> src/lib.rs:50:5
Nov 17 13:44:53.443 INFO [stderr]    |
Nov 17 13:44:53.443 INFO [stderr] 50 |     thread: thread::JoinHandle<()>,
Nov 17 13:44:53.443 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 13:44:53.443 INFO [stderr] 
Nov 17 13:44:54.048 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Nov 17 13:44:54.061 INFO [stderr] su: No module specific data is present
Nov 17 13:44:54.659 INFO running `"docker" "inspect" "0311db0887c745eda5dc61b1e99385bce4cc6a8a0d894fb041eef53554d74759"`
Nov 17 13:44:54.991 INFO running `"docker" "rm" "-f" "0311db0887c745eda5dc61b1e99385bce4cc6a8a0d894fb041eef53554d74759"`
Nov 17 13:44:55.269 INFO [stdout] 0311db0887c745eda5dc61b1e99385bce4cc6a8a0d894fb041eef53554d74759
Nov 17 13:44:55.277 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 17 13:44:55.740 INFO [stdout] c3ab04f17cef247bf8f19ba3fa855e9c55058cc9edb8086c4adc2a308425bc6e
Nov 17 13:44:55.742 INFO running `"docker" "start" "-a" "c3ab04f17cef247bf8f19ba3fa855e9c55058cc9edb8086c4adc2a308425bc6e"`
Nov 17 13:44:57.250 INFO [stderr] usermod: no changes
Nov 17 13:44:57.322 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Nov 17 13:44:57.322 INFO [stderr]      Running /target/debug/deps/concurrency_demo-3673659825a95a2d
Nov 17 13:44:57.325 INFO [stderr]      Running /target/debug/deps/main-0869bd64d4bb49cc
Nov 17 13:44:57.326 INFO [stdout] 
Nov 17 13:44:57.326 INFO [stdout] running 0 tests
Nov 17 13:44:57.326 INFO [stdout] 
Nov 17 13:44:57.326 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 13:44:57.326 INFO [stdout] 
Nov 17 13:44:57.335 INFO [stdout] 
Nov 17 13:44:57.335 INFO [stdout] running 0 tests
Nov 17 13:44:57.335 INFO [stdout] 
Nov 17 13:44:57.335 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 13:44:57.335 INFO [stdout] 
Nov 17 13:44:57.337 INFO [stderr]    Doc-tests concurrency_demo
Nov 17 13:44:57.987 INFO [stdout] 
Nov 17 13:44:57.987 INFO [stdout] running 0 tests
Nov 17 13:44:57.987 INFO [stdout] 
Nov 17 13:44:57.987 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 13:44:57.987 INFO [stdout] 
Nov 17 13:44:57.988 INFO [stderr] su: No module specific data is present
Nov 17 13:44:58.660 INFO running `"docker" "inspect" "c3ab04f17cef247bf8f19ba3fa855e9c55058cc9edb8086c4adc2a308425bc6e"`
Nov 17 13:44:58.807 INFO running `"docker" "rm" "-f" "c3ab04f17cef247bf8f19ba3fa855e9c55058cc9edb8086c4adc2a308425bc6e"`
Nov 17 13:44:59.021 INFO [stdout] c3ab04f17cef247bf8f19ba3fa855e9c55058cc9edb8086c4adc2a308425bc6e