Oct 12 09:49:45.669 INFO checking zhenhuanlee/simple_server against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 09:49:45.670 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 12 09:49:46.090 INFO blam! 48cc1bab4de0a5123834726aced98522fc322e0b44ca4a7cfc990e56eb8e5257
Oct 12 09:49:46.091 INFO running `"docker" "start" "-a" "48cc1bab4de0a5123834726aced98522fc322e0b44ca4a7cfc990e56eb8e5257"`
Oct 12 09:49:47.420 INFO kablam! usermod: no changes
Oct 12 09:49:47.500 INFO kablam!     Checking simple_server v0.1.0 (/source)
Oct 12 09:49:47.646 INFO kablam! warning: field is never used: `workers`
Oct 12 09:49:47.646 INFO kablam!  --> src/hello/lib.rs:8:3
Oct 12 09:49:47.646 INFO kablam!   |
Oct 12 09:49:47.646 INFO kablam! 8 |   workers: Vec<Worker>,
Oct 12 09:49:47.646 INFO kablam!   |   ^^^^^^^^^^^^^^^^^^^^
Oct 12 09:49:47.646 INFO kablam!   |
Oct 12 09:49:47.646 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 09:49:47.646 INFO kablam! 
Oct 12 09:49:47.646 INFO kablam! warning: field is never used: `id`
Oct 12 09:49:47.646 INFO kablam!   --> src/hello/lib.rs:15:3
Oct 12 09:49:47.646 INFO kablam!    |
Oct 12 09:49:47.646 INFO kablam! 15 |   id: usize,
Oct 12 09:49:47.646 INFO kablam!    |   ^^^^^^^^^
Oct 12 09:49:47.646 INFO kablam! 
Oct 12 09:49:47.646 INFO kablam! warning: field is never used: `thread`
Oct 12 09:49:47.646 INFO kablam!   --> src/hello/lib.rs:16:3
Oct 12 09:49:47.646 INFO kablam!    |
Oct 12 09:49:47.646 INFO kablam! 16 |   thread: thread::JoinHandle<()>,
Oct 12 09:49:47.646 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:49:47.646 INFO kablam! 
Oct 12 09:49:47.698 INFO kablam! warning: field is never used: `workers`
Oct 12 09:49:47.698 INFO kablam!  --> src/hello/lib.rs:8:3
Oct 12 09:49:47.698 INFO kablam!   |
Oct 12 09:49:47.698 INFO kablam! 8 |   workers: Vec<Worker>,
Oct 12 09:49:47.698 INFO kablam!   |   ^^^^^^^^^^^^^^^^^^^^
Oct 12 09:49:47.698 INFO kablam!   |
Oct 12 09:49:47.698 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 09:49:47.698 INFO kablam! 
Oct 12 09:49:47.698 INFO kablam! warning: field is never used: `id`
Oct 12 09:49:47.698 INFO kablam!   --> src/hello/lib.rs:15:3
Oct 12 09:49:47.698 INFO kablam!    |
Oct 12 09:49:47.698 INFO kablam! 15 |   id: usize,
Oct 12 09:49:47.698 INFO kablam!    |   ^^^^^^^^^
Oct 12 09:49:47.698 INFO kablam! 
Oct 12 09:49:47.698 INFO kablam! warning: field is never used: `thread`
Oct 12 09:49:47.698 INFO kablam!   --> src/hello/lib.rs:16:3
Oct 12 09:49:47.698 INFO kablam!    |
Oct 12 09:49:47.698 INFO kablam! 16 |   thread: thread::JoinHandle<()>,
Oct 12 09:49:47.698 INFO kablam!    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:49:47.698 INFO kablam! 
Oct 12 09:49:47.997 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Oct 12 09:49:48.012 INFO kablam! su: No module specific data is present
Oct 12 09:49:48.640 INFO running `"docker" "rm" "-f" "48cc1bab4de0a5123834726aced98522fc322e0b44ca4a7cfc990e56eb8e5257"`
Oct 12 09:49:49.084 INFO blam! 48cc1bab4de0a5123834726aced98522fc322e0b44ca4a7cfc990e56eb8e5257