Dec 04 21:41:10.669 INFO checking bobisme/rustrnn against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:41:10.669 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 04 21:41:11.171 INFO [stdout] 07ed93d7f43fa9983685f4567692196553eeaf75e590640b451596073e02d747
Dec 04 21:41:11.179 INFO running `"docker" "start" "-a" "07ed93d7f43fa9983685f4567692196553eeaf75e590640b451596073e02d747"`
Dec 04 21:41:12.418 INFO [stderr] usermod: no changes
Dec 04 21:41:12.491 INFO [stderr]     Checking rustrnn v0.1.0 (/source)
Dec 04 21:41:13.579 INFO [stderr] warning: struct is never constructed: `Layer`
Dec 04 21:41:13.579 INFO [stderr]  --> src/layer.rs:3:1
Dec 04 21:41:13.579 INFO [stderr]   |
Dec 04 21:41:13.579 INFO [stderr] 3 | pub struct Layer {
Dec 04 21:41:13.579 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 04 21:41:13.579 INFO [stderr]   |
Dec 04 21:41:13.579 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 21:41:13.579 INFO [stderr] 
Dec 04 21:41:13.579 INFO [stderr] warning: method is never used: `new`
Dec 04 21:41:13.579 INFO [stderr]   --> src/layer.rs:10:5
Dec 04 21:41:13.579 INFO [stderr]    |
Dec 04 21:41:13.579 INFO [stderr] 10 |     pub fn new(input_size: usize, size: usize) -> Layer {
Dec 04 21:41:13.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:41:13.579 INFO [stderr] 
Dec 04 21:41:13.579 INFO [stderr] warning: method is never used: `size`
Dec 04 21:41:13.579 INFO [stderr]   --> src/layer.rs:18:5
Dec 04 21:41:13.579 INFO [stderr]    |
Dec 04 21:41:13.579 INFO [stderr] 18 |     pub fn size(&self) -> usize {
Dec 04 21:41:13.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:41:13.579 INFO [stderr] 
Dec 04 21:41:13.579 INFO [stderr] warning: method is never used: `input_size`
Dec 04 21:41:13.579 INFO [stderr]   --> src/layer.rs:22:5
Dec 04 21:41:13.579 INFO [stderr]    |
Dec 04 21:41:13.579 INFO [stderr] 22 |     pub fn input_size(&self) -> usize {
Dec 04 21:41:13.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:41:13.579 INFO [stderr] 
Dec 04 21:41:14.302 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 21:41:14.302 INFO [stderr]    --> src/matrix.rs:440:13
Dec 04 21:41:14.302 INFO [stderr]     |
Dec 04 21:41:14.303 INFO [stderr] 440 |             m1 + &m2;
Dec 04 21:41:14.303 INFO [stderr]     |             ^^^^^^^^
Dec 04 21:41:14.303 INFO [stderr]     |
Dec 04 21:41:14.303 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 21:41:14.303 INFO [stderr] 
Dec 04 21:41:14.303 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 21:41:14.303 INFO [stderr]    --> src/matrix.rs:488:13
Dec 04 21:41:14.303 INFO [stderr]     |
Dec 04 21:41:14.303 INFO [stderr] 488 |             m1 - &m2;
Dec 04 21:41:14.303 INFO [stderr]     |             ^^^^^^^^
Dec 04 21:41:14.303 INFO [stderr] 
Dec 04 21:41:14.339 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.89s
Dec 04 21:41:14.359 INFO [stderr] su: No module specific data is present
Dec 04 21:41:15.697 INFO running `"docker" "inspect" "07ed93d7f43fa9983685f4567692196553eeaf75e590640b451596073e02d747"`
Dec 04 21:41:16.089 INFO running `"docker" "rm" "-f" "07ed93d7f43fa9983685f4567692196553eeaf75e590640b451596073e02d747"`
Dec 04 21:41:16.463 INFO [stdout] 07ed93d7f43fa9983685f4567692196553eeaf75e590640b451596073e02d747