Dec 17 13:03:10.505 INFO checking tuvistavie/rust-simple-nn against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 13:03:10.505 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 13:03:11.080 INFO [stdout] ffe38ccf2bbe9dd8a56fdff79f68b5b5c4afd797fe2965c24ee3bc359818c866
Dec 17 13:03:11.083 INFO running `"docker" "start" "-a" "ffe38ccf2bbe9dd8a56fdff79f68b5b5c4afd797fe2965c24ee3bc359818c866"`
Dec 17 13:03:13.488 INFO [stderr]     Checking libc v0.2.20
Dec 17 13:03:14.299 INFO [stderr]     Checking rand v0.3.15
Dec 17 13:03:15.678 INFO [stderr]     Checking simple_nn v0.1.0 (/opt/crater/workdir)
Dec 17 13:03:19.012 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 17 13:03:19.012 INFO [stderr]   --> tests/linalg_matrix.rs:35:5
Dec 17 13:03:19.012 INFO [stderr]    |
Dec 17 13:03:19.012 INFO [stderr] 35 |     &matrix + &other;
Dec 17 13:03:19.012 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 17 13:03:19.012 INFO [stderr]    |
Dec 17 13:03:19.012 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 13:03:19.012 INFO [stderr] 
Dec 17 13:03:19.061 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.62s
Dec 17 13:03:20.249 INFO running `"docker" "inspect" "ffe38ccf2bbe9dd8a56fdff79f68b5b5c4afd797fe2965c24ee3bc359818c866"`
Dec 17 13:03:20.568 INFO running `"docker" "rm" "-f" "ffe38ccf2bbe9dd8a56fdff79f68b5b5c4afd797fe2965c24ee3bc359818c866"`
Dec 17 13:03:20.839 INFO [stdout] ffe38ccf2bbe9dd8a56fdff79f68b5b5c4afd797fe2965c24ee3bc359818c866