Nov 27 16:04:01.966 INFO checking zhenhuanlee/simple_server against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 27 16:04:01.966 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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 27 16:04:02.416 INFO [stdout] f7bad0d63249257ddcb0a468f8fd7a580b32039f267b5777bb528cb7cbc6642e
Nov 27 16:04:02.422 INFO running `"docker" "start" "-a" "f7bad0d63249257ddcb0a468f8fd7a580b32039f267b5777bb528cb7cbc6642e"`
Nov 27 16:04:03.873 INFO [stderr] usermod: no changes
Nov 27 16:04:03.926 INFO [stderr]     Checking simple_server v0.1.0 (/source)
Nov 27 16:04:04.192 INFO [stderr] warning: field is never used: `workers`
Nov 27 16:04:04.192 INFO [stderr]  --> src/hello/lib.rs:8:3
Nov 27 16:04:04.192 INFO [stderr]   |
Nov 27 16:04:04.192 INFO [stderr] 8 |   workers: Vec<Worker>,
Nov 27 16:04:04.192 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
Nov 27 16:04:04.192 INFO [stderr]   |
Nov 27 16:04:04.192 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 27 16:04:04.192 INFO [stderr] 
Nov 27 16:04:04.192 INFO [stderr] warning: field is never used: `id`
Nov 27 16:04:04.192 INFO [stderr]   --> src/hello/lib.rs:15:3
Nov 27 16:04:04.192 INFO [stderr]    |
Nov 27 16:04:04.192 INFO [stderr] 15 |   id: usize,
Nov 27 16:04:04.192 INFO [stderr]    |   ^^^^^^^^^
Nov 27 16:04:04.192 INFO [stderr] 
Nov 27 16:04:04.192 INFO [stderr] warning: field is never used: `thread`
Nov 27 16:04:04.192 INFO [stderr]   --> src/hello/lib.rs:16:3
Nov 27 16:04:04.192 INFO [stderr]    |
Nov 27 16:04:04.192 INFO [stderr] 16 |   thread: thread::JoinHandle<()>,
Nov 27 16:04:04.192 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:04:04.192 INFO [stderr] 
Nov 27 16:04:04.204 INFO [stderr] warning: field is never used: `workers`
Nov 27 16:04:04.204 INFO [stderr]  --> src/hello/lib.rs:8:3
Nov 27 16:04:04.204 INFO [stderr]   |
Nov 27 16:04:04.204 INFO [stderr] 8 |   workers: Vec<Worker>,
Nov 27 16:04:04.204 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
Nov 27 16:04:04.204 INFO [stderr]   |
Nov 27 16:04:04.204 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 27 16:04:04.204 INFO [stderr] 
Nov 27 16:04:04.204 INFO [stderr] warning: field is never used: `id`
Nov 27 16:04:04.204 INFO [stderr]   --> src/hello/lib.rs:15:3
Nov 27 16:04:04.204 INFO [stderr]    |
Nov 27 16:04:04.204 INFO [stderr] 15 |   id: usize,
Nov 27 16:04:04.204 INFO [stderr]    |   ^^^^^^^^^
Nov 27 16:04:04.204 INFO [stderr] 
Nov 27 16:04:04.204 INFO [stderr] warning: field is never used: `thread`
Nov 27 16:04:04.204 INFO [stderr]   --> src/hello/lib.rs:16:3
Nov 27 16:04:04.204 INFO [stderr]    |
Nov 27 16:04:04.204 INFO [stderr] 16 |   thread: thread::JoinHandle<()>,
Nov 27 16:04:04.204 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:04:04.204 INFO [stderr] 
Nov 27 16:04:04.483 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Nov 27 16:04:04.493 INFO [stderr] su: No module specific data is present
Nov 27 16:04:05.089 INFO running `"docker" "inspect" "f7bad0d63249257ddcb0a468f8fd7a580b32039f267b5777bb528cb7cbc6642e"`
Nov 27 16:04:05.394 INFO running `"docker" "rm" "-f" "f7bad0d63249257ddcb0a468f8fd7a580b32039f267b5777bb528cb7cbc6642e"`
Nov 27 16:04:05.692 INFO [stdout] f7bad0d63249257ddcb0a468f8fd7a580b32039f267b5777bb528cb7cbc6642e