Oct 31 17:08:25.442 INFO checking zhenhuanlee/simple_server against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Oct 31 17:08:25.444 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-3/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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"`
Oct 31 17:08:25.864 INFO blam! 1e355861b6acd38967b482cab027ec7d70b8f9d4b2bf4b1ca33fe81112cc2dbb
Oct 31 17:08:25.865 INFO running `"docker" "start" "-a" "1e355861b6acd38967b482cab027ec7d70b8f9d4b2bf4b1ca33fe81112cc2dbb"`
Oct 31 17:08:26.984 INFO kablam! usermod: no changes
Oct 31 17:08:27.040 INFO kablam!     Checking simple_server v0.1.0 (/source)
Oct 31 17:08:27.309 INFO kablam! warning: field is never used: `workers`
Oct 31 17:08:27.309 INFO kablam!  --> src/hello/lib.rs:8:3
Oct 31 17:08:27.309 INFO kablam!   |
Oct 31 17:08:27.309 INFO kablam! 8 |   workers: Vec<Worker>,
Oct 31 17:08:27.309 INFO kablam!   |   ^^^^^^^^^^^^^^^^^^^^
Oct 31 17:08:27.309 INFO kablam!   |
Oct 31 17:08:27.309 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 17:08:27.310 INFO kablam! 
Oct 31 17:08:27.310 INFO kablam! warning: field is never used: `id`
Oct 31 17:08:27.310 INFO kablam!   --> src/hello/lib.rs:15:3
Oct 31 17:08:27.310 INFO kablam!    |
Oct 31 17:08:27.310 INFO kablam! 15 |   id: usize,
Oct 31 17:08:27.310 INFO kablam!    |   ^^^^^^^^^
Oct 31 17:08:27.310 INFO kablam! 
Oct 31 17:08:27.310 INFO kablam! warning: field is never used: `thread`
Oct 31 17:08:27.310 INFO kablam!   --> src/hello/lib.rs:16:3
Oct 31 17:08:27.310 INFO kablam!    |
Oct 31 17:08:27.310 INFO kablam! 16 |   thread: thread::JoinHandle<()>,
Oct 31 17:08:27.310 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 17:08:27.310 INFO kablam! 
Oct 31 17:08:27.354 INFO kablam! warning: field is never used: `workers`
Oct 31 17:08:27.354 INFO kablam!  --> src/hello/lib.rs:8:3
Oct 31 17:08:27.354 INFO kablam!   |
Oct 31 17:08:27.354 INFO kablam! 8 |   workers: Vec<Worker>,
Oct 31 17:08:27.354 INFO kablam!   |   ^^^^^^^^^^^^^^^^^^^^
Oct 31 17:08:27.354 INFO kablam!   |
Oct 31 17:08:27.354 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 17:08:27.354 INFO kablam! 
Oct 31 17:08:27.354 INFO kablam! warning: field is never used: `id`
Oct 31 17:08:27.354 INFO kablam!   --> src/hello/lib.rs:15:3
Oct 31 17:08:27.354 INFO kablam!    |
Oct 31 17:08:27.354 INFO kablam! 15 |   id: usize,
Oct 31 17:08:27.354 INFO kablam!    |   ^^^^^^^^^
Oct 31 17:08:27.354 INFO kablam! 
Oct 31 17:08:27.354 INFO kablam! warning: field is never used: `thread`
Oct 31 17:08:27.354 INFO kablam!   --> src/hello/lib.rs:16:3
Oct 31 17:08:27.354 INFO kablam!    |
Oct 31 17:08:27.354 INFO kablam! 16 |   thread: thread::JoinHandle<()>,
Oct 31 17:08:27.354 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 17:08:27.354 INFO kablam! 
Oct 31 17:08:27.664 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Oct 31 17:08:27.664 INFO kablam! su: No module specific data is present
Oct 31 17:08:28.204 INFO running `"docker" "rm" "-f" "1e355861b6acd38967b482cab027ec7d70b8f9d4b2bf4b1ca33fe81112cc2dbb"`
Oct 31 17:08:28.438 INFO blam! 1e355861b6acd38967b482cab027ec7d70b8f9d4b2bf4b1ca33fe81112cc2dbb