Dec 04 23:20:13.427 INFO checking Zanadar/hello against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 23:20:13.427 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-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 04 23:20:13.657 INFO [stdout] 31e95c0a48c342736c8bb95a19c91d83f8bbe52f0be6a259821d9ead324af8a7
Dec 04 23:20:13.661 INFO running `"docker" "start" "-a" "31e95c0a48c342736c8bb95a19c91d83f8bbe52f0be6a259821d9ead324af8a7"`
Dec 04 23:20:14.289 INFO [stderr] usermod: no changes
Dec 04 23:20:14.328 INFO [stderr]     Checking hello v0.1.0 (/source)
Dec 04 23:20:14.927 INFO [stderr] warning: field is never used: `workers`
Dec 04 23:20:14.927 INFO [stderr]  --> src/lib.rs:7:5
Dec 04 23:20:14.927 INFO [stderr]   |
Dec 04 23:20:14.927 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 04 23:20:14.927 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 23:20:14.927 INFO [stderr]   |
Dec 04 23:20:14.927 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 23:20:14.927 INFO [stderr] 
Dec 04 23:20:14.927 INFO [stderr] warning: field is never used: `id`
Dec 04 23:20:14.927 INFO [stderr]   --> src/lib.rs:51:5
Dec 04 23:20:14.927 INFO [stderr]    |
Dec 04 23:20:14.927 INFO [stderr] 51 |     id: usize,
Dec 04 23:20:14.927 INFO [stderr]    |     ^^^^^^^^^
Dec 04 23:20:14.927 INFO [stderr] 
Dec 04 23:20:14.927 INFO [stderr] warning: field is never used: `thread`
Dec 04 23:20:14.927 INFO [stderr]   --> src/lib.rs:52:5
Dec 04 23:20:14.927 INFO [stderr]    |
Dec 04 23:20:14.927 INFO [stderr] 52 |     thread: thread::JoinHandle<()>,
Dec 04 23:20:14.927 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:20:14.927 INFO [stderr] 
Dec 04 23:20:14.976 INFO [stderr] warning: field is never used: `workers`
Dec 04 23:20:14.976 INFO [stderr]  --> src/lib.rs:7:5
Dec 04 23:20:14.976 INFO [stderr]   |
Dec 04 23:20:14.976 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 04 23:20:14.976 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 23:20:14.976 INFO [stderr]   |
Dec 04 23:20:14.976 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 23:20:14.976 INFO [stderr] 
Dec 04 23:20:14.976 INFO [stderr] warning: field is never used: `id`
Dec 04 23:20:14.976 INFO [stderr]   --> src/lib.rs:51:5
Dec 04 23:20:14.976 INFO [stderr]    |
Dec 04 23:20:14.976 INFO [stderr] 51 |     id: usize,
Dec 04 23:20:14.976 INFO [stderr]    |     ^^^^^^^^^
Dec 04 23:20:14.976 INFO [stderr] 
Dec 04 23:20:14.976 INFO [stderr] warning: field is never used: `thread`
Dec 04 23:20:14.976 INFO [stderr]   --> src/lib.rs:52:5
Dec 04 23:20:14.976 INFO [stderr]    |
Dec 04 23:20:14.976 INFO [stderr] 52 |     thread: thread::JoinHandle<()>,
Dec 04 23:20:14.976 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 23:20:14.976 INFO [stderr] 
Dec 04 23:20:15.671 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
Dec 04 23:20:15.673 INFO [stderr] su: No module specific data is present
Dec 04 23:20:16.019 INFO running `"docker" "inspect" "31e95c0a48c342736c8bb95a19c91d83f8bbe52f0be6a259821d9ead324af8a7"`
Dec 04 23:20:16.136 INFO running `"docker" "rm" "-f" "31e95c0a48c342736c8bb95a19c91d83f8bbe52f0be6a259821d9ead324af8a7"`
Dec 04 23:20:16.261 INFO [stdout] 31e95c0a48c342736c8bb95a19c91d83f8bbe52f0be6a259821d9ead324af8a7