Dec 11 13:38:10.154 INFO checking michaltakac/rust-webserver against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 13:38:10.154 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 13:38:10.760 INFO [stdout] aa608f5e91b294c18f6f8ec86db7e5e0b18f024163d42590619f6e4f14f9c98b
Dec 11 13:38:10.762 INFO running `"docker" "start" "-a" "aa608f5e91b294c18f6f8ec86db7e5e0b18f024163d42590619f6e4f14f9c98b"`
Dec 11 13:38:12.332 INFO [stderr] usermod: no changes
Dec 11 13:38:12.408 INFO [stderr]     Checking webserver v0.1.0 (/source)
Dec 11 13:38:12.932 INFO [stderr] warning: field is never used: `workers`
Dec 11 13:38:12.932 INFO [stderr]  --> src/lib.rs:7:5
Dec 11 13:38:12.932 INFO [stderr]   |
Dec 11 13:38:12.932 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 11 13:38:12.932 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 13:38:12.932 INFO [stderr]   |
Dec 11 13:38:12.932 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 13:38:12.932 INFO [stderr] 
Dec 11 13:38:12.932 INFO [stderr] warning: field is never used: `id`
Dec 11 13:38:12.932 INFO [stderr]   --> src/lib.rs:61:5
Dec 11 13:38:12.932 INFO [stderr]    |
Dec 11 13:38:12.932 INFO [stderr] 61 |     id: usize,
Dec 11 13:38:12.932 INFO [stderr]    |     ^^^^^^^^^
Dec 11 13:38:12.932 INFO [stderr] 
Dec 11 13:38:12.932 INFO [stderr] warning: field is never used: `thread`
Dec 11 13:38:12.932 INFO [stderr]   --> src/lib.rs:62:5
Dec 11 13:38:12.932 INFO [stderr]    |
Dec 11 13:38:12.932 INFO [stderr] 62 |     thread: thread::JoinHandle<()>,
Dec 11 13:38:12.932 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:38:12.932 INFO [stderr] 
Dec 11 13:38:12.987 INFO [stderr] warning: field is never used: `workers`
Dec 11 13:38:12.987 INFO [stderr]  --> src/lib.rs:7:5
Dec 11 13:38:12.987 INFO [stderr]   |
Dec 11 13:38:12.987 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 11 13:38:12.987 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 13:38:12.987 INFO [stderr]   |
Dec 11 13:38:12.987 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 13:38:12.987 INFO [stderr] 
Dec 11 13:38:12.987 INFO [stderr] warning: field is never used: `id`
Dec 11 13:38:12.987 INFO [stderr]   --> src/lib.rs:61:5
Dec 11 13:38:12.987 INFO [stderr]    |
Dec 11 13:38:12.987 INFO [stderr] 61 |     id: usize,
Dec 11 13:38:12.987 INFO [stderr]    |     ^^^^^^^^^
Dec 11 13:38:12.987 INFO [stderr] 
Dec 11 13:38:12.987 INFO [stderr] warning: field is never used: `thread`
Dec 11 13:38:12.987 INFO [stderr]   --> src/lib.rs:62:5
Dec 11 13:38:12.987 INFO [stderr]    |
Dec 11 13:38:12.987 INFO [stderr] 62 |     thread: thread::JoinHandle<()>,
Dec 11 13:38:12.987 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:38:12.987 INFO [stderr] 
Dec 11 13:38:13.531 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
Dec 11 13:38:13.531 INFO [stderr] su: No module specific data is present
Dec 11 13:38:14.329 INFO running `"docker" "inspect" "aa608f5e91b294c18f6f8ec86db7e5e0b18f024163d42590619f6e4f14f9c98b"`
Dec 11 13:38:14.591 INFO running `"docker" "rm" "-f" "aa608f5e91b294c18f6f8ec86db7e5e0b18f024163d42590619f6e4f14f9c98b"`
Dec 11 13:38:14.839 INFO [stdout] aa608f5e91b294c18f6f8ec86db7e5e0b18f024163d42590619f6e4f14f9c98b