Dec 04 18:08:14.277 INFO checking glasses-n-contacts/rust-simple-server against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 18:08:14.277 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 18:08:14.816 INFO [stdout] 94f6794bde139d8ebd1187e1a52bc46ed70aa0050861227d4cf286df3d1135d1
Dec 04 18:08:14.819 INFO running `"docker" "start" "-a" "94f6794bde139d8ebd1187e1a52bc46ed70aa0050861227d4cf286df3d1135d1"`
Dec 04 18:08:16.403 INFO [stderr] usermod: no changes
Dec 04 18:08:16.475 INFO [stderr]     Checking hello v0.1.0 (/source)
Dec 04 18:08:16.979 INFO [stderr] warning: field is never used: `workers`
Dec 04 18:08:16.979 INFO [stderr]  --> src/lib.rs:7:5
Dec 04 18:08:16.979 INFO [stderr]   |
Dec 04 18:08:16.979 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 04 18:08:16.979 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 18:08:16.979 INFO [stderr]   |
Dec 04 18:08:16.979 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 18:08:16.979 INFO [stderr] 
Dec 04 18:08:16.979 INFO [stderr] warning: field is never used: `id`
Dec 04 18:08:16.979 INFO [stderr]   --> src/lib.rs:61:5
Dec 04 18:08:16.979 INFO [stderr]    |
Dec 04 18:08:16.979 INFO [stderr] 61 |     id: usize,
Dec 04 18:08:16.979 INFO [stderr]    |     ^^^^^^^^^
Dec 04 18:08:16.979 INFO [stderr] 
Dec 04 18:08:16.979 INFO [stderr] warning: field is never used: `thread`
Dec 04 18:08:16.979 INFO [stderr]   --> src/lib.rs:62:5
Dec 04 18:08:16.979 INFO [stderr]    |
Dec 04 18:08:16.979 INFO [stderr] 62 |     thread: thread::JoinHandle<()>,
Dec 04 18:08:16.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:08:16.979 INFO [stderr] 
Dec 04 18:08:17.195 INFO [stderr] warning: field is never used: `workers`
Dec 04 18:08:17.195 INFO [stderr]  --> src/lib.rs:7:5
Dec 04 18:08:17.195 INFO [stderr]   |
Dec 04 18:08:17.195 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 04 18:08:17.195 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 18:08:17.195 INFO [stderr]   |
Dec 04 18:08:17.195 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 18:08:17.195 INFO [stderr] 
Dec 04 18:08:17.195 INFO [stderr] warning: field is never used: `id`
Dec 04 18:08:17.195 INFO [stderr]   --> src/lib.rs:61:5
Dec 04 18:08:17.195 INFO [stderr]    |
Dec 04 18:08:17.195 INFO [stderr] 61 |     id: usize,
Dec 04 18:08:17.195 INFO [stderr]    |     ^^^^^^^^^
Dec 04 18:08:17.195 INFO [stderr] 
Dec 04 18:08:17.195 INFO [stderr] warning: field is never used: `thread`
Dec 04 18:08:17.195 INFO [stderr]   --> src/lib.rs:62:5
Dec 04 18:08:17.195 INFO [stderr]    |
Dec 04 18:08:17.195 INFO [stderr] 62 |     thread: thread::JoinHandle<()>,
Dec 04 18:08:17.195 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:08:17.195 INFO [stderr] 
Dec 04 18:08:17.758 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
Dec 04 18:08:17.765 INFO [stderr] su: No module specific data is present
Dec 04 18:08:18.922 INFO running `"docker" "inspect" "94f6794bde139d8ebd1187e1a52bc46ed70aa0050861227d4cf286df3d1135d1"`
Dec 04 18:08:19.216 INFO running `"docker" "rm" "-f" "94f6794bde139d8ebd1187e1a52bc46ed70aa0050861227d4cf286df3d1135d1"`
Dec 04 18:08:19.515 INFO [stdout] 94f6794bde139d8ebd1187e1a52bc46ed70aa0050861227d4cf286df3d1135d1