Nov 29 13:58:45.399 INFO checking zhenhuanlee/simple_server against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 29 13:58:45.399 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-1/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 29 13:58:45.872 INFO [stdout] b8967a2d894716da74657134aa8d7c2f6aaf53a45ac6d6783a0e161bab2669d6
Nov 29 13:58:45.874 INFO running `"docker" "start" "-a" "b8967a2d894716da74657134aa8d7c2f6aaf53a45ac6d6783a0e161bab2669d6"`
Nov 29 13:58:47.179 INFO [stderr] usermod: no changes
Nov 29 13:58:47.228 INFO [stderr]     Checking simple_server v0.1.0 (/source)
Nov 29 13:58:47.492 INFO [stderr] warning: field is never used: `workers`
Nov 29 13:58:47.492 INFO [stderr]  --> src/hello/lib.rs:8:3
Nov 29 13:58:47.492 INFO [stderr]   |
Nov 29 13:58:47.492 INFO [stderr] 8 |   workers: Vec<Worker>,
Nov 29 13:58:47.492 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:47.492 INFO [stderr]   |
Nov 29 13:58:47.492 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 29 13:58:47.492 INFO [stderr] 
Nov 29 13:58:47.492 INFO [stderr] warning: field is never used: `id`
Nov 29 13:58:47.492 INFO [stderr]   --> src/hello/lib.rs:15:3
Nov 29 13:58:47.492 INFO [stderr]    |
Nov 29 13:58:47.492 INFO [stderr] 15 |   id: usize,
Nov 29 13:58:47.492 INFO [stderr]    |   ^^^^^^^^^
Nov 29 13:58:47.492 INFO [stderr] 
Nov 29 13:58:47.492 INFO [stderr] warning: field is never used: `thread`
Nov 29 13:58:47.492 INFO [stderr]   --> src/hello/lib.rs:16:3
Nov 29 13:58:47.492 INFO [stderr]    |
Nov 29 13:58:47.492 INFO [stderr] 16 |   thread: thread::JoinHandle<()>,
Nov 29 13:58:47.492 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:47.492 INFO [stderr] 
Nov 29 13:58:47.536 INFO [stderr] warning: field is never used: `workers`
Nov 29 13:58:47.536 INFO [stderr]  --> src/hello/lib.rs:8:3
Nov 29 13:58:47.536 INFO [stderr]   |
Nov 29 13:58:47.536 INFO [stderr] 8 |   workers: Vec<Worker>,
Nov 29 13:58:47.536 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:47.536 INFO [stderr]   |
Nov 29 13:58:47.536 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 29 13:58:47.536 INFO [stderr] 
Nov 29 13:58:47.536 INFO [stderr] warning: field is never used: `id`
Nov 29 13:58:47.536 INFO [stderr]   --> src/hello/lib.rs:15:3
Nov 29 13:58:47.536 INFO [stderr]    |
Nov 29 13:58:47.536 INFO [stderr] 15 |   id: usize,
Nov 29 13:58:47.536 INFO [stderr]    |   ^^^^^^^^^
Nov 29 13:58:47.536 INFO [stderr] 
Nov 29 13:58:47.536 INFO [stderr] warning: field is never used: `thread`
Nov 29 13:58:47.536 INFO [stderr]   --> src/hello/lib.rs:16:3
Nov 29 13:58:47.536 INFO [stderr]    |
Nov 29 13:58:47.536 INFO [stderr] 16 |   thread: thread::JoinHandle<()>,
Nov 29 13:58:47.536 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:47.536 INFO [stderr] 
Nov 29 13:58:47.935 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Nov 29 13:58:47.942 INFO [stderr] su: No module specific data is present
Nov 29 13:58:48.962 INFO running `"docker" "inspect" "b8967a2d894716da74657134aa8d7c2f6aaf53a45ac6d6783a0e161bab2669d6"`
Nov 29 13:58:49.330 INFO running `"docker" "rm" "-f" "b8967a2d894716da74657134aa8d7c2f6aaf53a45ac6d6783a0e161bab2669d6"`
Nov 29 13:58:49.647 INFO [stdout] b8967a2d894716da74657134aa8d7c2f6aaf53a45ac6d6783a0e161bab2669d6