Oct 13 03:42:28.243 INFO checking MainShayne233/concurrency_demo against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 03:42:28.244 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/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 13 03:42:28.488 INFO blam! b1e46ddb2dab04b454b48e6cf8388081181209a18c4755adb4e73dfca281d244
Oct 13 03:42:28.490 INFO running `"docker" "start" "-a" "b1e46ddb2dab04b454b48e6cf8388081181209a18c4755adb4e73dfca281d244"`
Oct 13 03:42:29.833 INFO kablam! usermod: no changes
Oct 13 03:42:29.920 INFO kablam!     Checking concurrency_demo v0.1.0 (/source)
Oct 13 03:42:30.684 INFO kablam! warning: field is never used: `workers`
Oct 13 03:42:30.684 INFO kablam!  --> src/lib.rs:7:5
Oct 13 03:42:30.684 INFO kablam!   |
Oct 13 03:42:30.684 INFO kablam! 7 |     workers: Vec<Worker>,
Oct 13 03:42:30.684 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Oct 13 03:42:30.684 INFO kablam!   |
Oct 13 03:42:30.684 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 13 03:42:30.684 INFO kablam! 
Oct 13 03:42:30.684 INFO kablam! warning: field is never used: `id`
Oct 13 03:42:30.684 INFO kablam!   --> src/lib.rs:49:5
Oct 13 03:42:30.684 INFO kablam!    |
Oct 13 03:42:30.684 INFO kablam! 49 |     id: usize,
Oct 13 03:42:30.684 INFO kablam!    |     ^^^^^^^^^
Oct 13 03:42:30.684 INFO kablam! 
Oct 13 03:42:30.684 INFO kablam! warning: field is never used: `thread`
Oct 13 03:42:30.684 INFO kablam!   --> src/lib.rs:50:5
Oct 13 03:42:30.684 INFO kablam!    |
Oct 13 03:42:30.685 INFO kablam! 50 |     thread: thread::JoinHandle<()>,
Oct 13 03:42:30.685 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 03:42:30.685 INFO kablam! 
Oct 13 03:42:31.052 INFO kablam! warning: field is never used: `workers`
Oct 13 03:42:31.052 INFO kablam!  --> src/lib.rs:7:5
Oct 13 03:42:31.052 INFO kablam!   |
Oct 13 03:42:31.052 INFO kablam! 7 |     workers: Vec<Worker>,
Oct 13 03:42:31.052 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Oct 13 03:42:31.072 INFO kablam!   |
Oct 13 03:42:31.072 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 13 03:42:31.072 INFO kablam! 
Oct 13 03:42:31.072 INFO kablam! warning: field is never used: `id`
Oct 13 03:42:31.072 INFO kablam!   --> src/lib.rs:49:5
Oct 13 03:42:31.072 INFO kablam!    |
Oct 13 03:42:31.072 INFO kablam! 49 |     id: usize,
Oct 13 03:42:31.072 INFO kablam!    |     ^^^^^^^^^
Oct 13 03:42:31.072 INFO kablam! 
Oct 13 03:42:31.072 INFO kablam! warning: field is never used: `thread`
Oct 13 03:42:31.072 INFO kablam!   --> src/lib.rs:50:5
Oct 13 03:42:31.072 INFO kablam!    |
Oct 13 03:42:31.072 INFO kablam! 50 |     thread: thread::JoinHandle<()>,
Oct 13 03:42:31.072 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 03:42:31.072 INFO kablam! 
Oct 13 03:42:31.814 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
Oct 13 03:42:31.818 INFO kablam! su: No module specific data is present
Oct 13 03:42:32.887 INFO running `"docker" "rm" "-f" "b1e46ddb2dab04b454b48e6cf8388081181209a18c4755adb4e73dfca281d244"`
Oct 13 03:42:33.174 INFO blam! b1e46ddb2dab04b454b48e6cf8388081181209a18c4755adb4e73dfca281d244