Dec 19 06:34:57.605 INFO checking tuvistavie/rust-simple-nn against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 06:34:57.605 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/tuvistavie/rust-simple-nn:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 06:34:58.175 INFO [stdout] a9dc055a57cc9960066ba7811b318fbe479b49a7cf294cbf74cc66b64daf96f5
Dec 19 06:34:58.177 INFO running `"docker" "start" "-a" "a9dc055a57cc9960066ba7811b318fbe479b49a7cf294cbf74cc66b64daf96f5"`
Dec 19 06:35:01.112 INFO [stderr]     Checking libc v0.2.20
Dec 19 06:35:01.802 INFO [stderr]     Checking rand v0.3.15
Dec 19 06:35:03.048 INFO [stderr]     Checking simple_nn v0.1.0 (/opt/crater/workdir)
Dec 19 06:35:05.964 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 19 06:35:05.964 INFO [stderr]   --> tests/linalg_matrix.rs:35:5
Dec 19 06:35:05.964 INFO [stderr]    |
Dec 19 06:35:05.964 INFO [stderr] 35 |     &matrix + &other;
Dec 19 06:35:05.964 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 19 06:35:05.964 INFO [stderr]    |
Dec 19 06:35:05.964 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 06:35:05.964 INFO [stderr] 
Dec 19 06:35:06.369 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.29s
Dec 19 06:35:07.394 INFO running `"docker" "inspect" "a9dc055a57cc9960066ba7811b318fbe479b49a7cf294cbf74cc66b64daf96f5"`
Dec 19 06:35:07.808 INFO running `"docker" "rm" "-f" "a9dc055a57cc9960066ba7811b318fbe479b49a7cf294cbf74cc66b64daf96f5"`
Dec 19 06:35:08.163 INFO [stdout] a9dc055a57cc9960066ba7811b318fbe479b49a7cf294cbf74cc66b64daf96f5