Dec 19 11:50:00.323 INFO checking niclim/rust-server against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 11:50:00.323 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/niclim/rust-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:50:00.692 INFO [stdout] 66a1c49e127a4b98e2719384f0c59bdbb53c74fd357b771b4539f117b74f38dc
Dec 19 11:50:00.696 INFO running `"docker" "start" "-a" "66a1c49e127a4b98e2719384f0c59bdbb53c74fd357b771b4539f117b74f38dc"`
Dec 19 11:50:03.276 INFO [stderr]     Checking ws v0.1.0 (/opt/crater/workdir)
Dec 19 11:50:03.591 INFO [stderr] warning: field is never used: `workers`
Dec 19 11:50:03.591 INFO [stderr]  --> src/lib.rs:7:5
Dec 19 11:50:03.591 INFO [stderr]   |
Dec 19 11:50:03.591 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 19 11:50:03.591 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 11:50:03.591 INFO [stderr]   |
Dec 19 11:50:03.591 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 11:50:03.591 INFO [stderr] 
Dec 19 11:50:03.591 INFO [stderr] warning: field is never used: `id`
Dec 19 11:50:03.591 INFO [stderr]   --> src/lib.rs:63:5
Dec 19 11:50:03.591 INFO [stderr]    |
Dec 19 11:50:03.591 INFO [stderr] 63 |     id: usize,
Dec 19 11:50:03.591 INFO [stderr]    |     ^^^^^^^^^
Dec 19 11:50:03.591 INFO [stderr] 
Dec 19 11:50:03.591 INFO [stderr] warning: field is never used: `thread`
Dec 19 11:50:03.591 INFO [stderr]   --> src/lib.rs:64:5
Dec 19 11:50:03.591 INFO [stderr]    |
Dec 19 11:50:03.591 INFO [stderr] 64 |     thread: thread::JoinHandle<()>,
Dec 19 11:50:03.591 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:50:03.591 INFO [stderr] 
Dec 19 11:50:03.779 INFO [stderr] warning: field is never used: `workers`
Dec 19 11:50:03.779 INFO [stderr]  --> src/lib.rs:7:5
Dec 19 11:50:03.779 INFO [stderr]   |
Dec 19 11:50:03.779 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 19 11:50:03.779 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 11:50:03.779 INFO [stderr]   |
Dec 19 11:50:03.779 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 11:50:03.779 INFO [stderr] 
Dec 19 11:50:03.788 INFO [stderr] warning: field is never used: `id`
Dec 19 11:50:03.788 INFO [stderr]   --> src/lib.rs:63:5
Dec 19 11:50:03.788 INFO [stderr]    |
Dec 19 11:50:03.788 INFO [stderr] 63 |     id: usize,
Dec 19 11:50:03.788 INFO [stderr]    |     ^^^^^^^^^
Dec 19 11:50:03.788 INFO [stderr] 
Dec 19 11:50:03.788 INFO [stderr] warning: field is never used: `thread`
Dec 19 11:50:03.788 INFO [stderr]   --> src/lib.rs:64:5
Dec 19 11:50:03.788 INFO [stderr]    |
Dec 19 11:50:03.788 INFO [stderr] 64 |     thread: thread::JoinHandle<()>,
Dec 19 11:50:03.788 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:50:03.788 INFO [stderr] 
Dec 19 11:50:04.029 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Dec 19 11:50:04.790 INFO running `"docker" "inspect" "66a1c49e127a4b98e2719384f0c59bdbb53c74fd357b771b4539f117b74f38dc"`
Dec 19 11:50:05.116 INFO running `"docker" "rm" "-f" "66a1c49e127a4b98e2719384f0c59bdbb53c74fd357b771b4539f117b74f38dc"`
Dec 19 11:50:05.472 INFO [stdout] 66a1c49e127a4b98e2719384f0c59bdbb53c74fd357b771b4539f117b74f38dc