Dec 05 08:50:45.556 INFO checking prophet-0.4.2 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 08:50:45.556 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 05 08:50:46.120 INFO [stdout] abe0d556fdf9ed191dfb1eae2fcd32e85f967285f1a19f30c8c7089f82fcde79
Dec 05 08:50:46.122 INFO running `"docker" "start" "-a" "abe0d556fdf9ed191dfb1eae2fcd32e85f967285f1a19f30c8c7089f82fcde79"`
Dec 05 08:50:47.471 INFO [stderr] usermod: no changes
Dec 05 08:50:47.711 INFO [stderr]    Compiling ndarray v0.10.14
Dec 05 08:50:56.682 INFO [stderr]     Checking ndarray-rand v0.6.1
Dec 05 08:50:57.997 INFO [stderr]     Checking prophet v0.4.2 (/source)
Dec 05 08:51:02.835 INFO [stderr] warning: unused return value of `std::borrow::ToOwned::to_owned` that must be used
Dec 05 08:51:02.835 INFO [stderr]    --> src/neural_net.rs:418:4
Dec 05 08:51:02.836 INFO [stderr]     |
Dec 05 08:51:02.836 INFO [stderr] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
Dec 05 08:51:02.836 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:51:02.837 INFO [stderr]     |
Dec 05 08:51:02.837 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 08:51:02.837 INFO [stderr]     = note: cloning is often expensive and is not expected to have side effects
Dec 05 08:51:02.838 INFO [stderr] 
Dec 05 08:51:08.179 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.67s
Dec 05 08:51:08.191 INFO [stderr] su: No module specific data is present
Dec 05 08:51:09.611 INFO running `"docker" "inspect" "abe0d556fdf9ed191dfb1eae2fcd32e85f967285f1a19f30c8c7089f82fcde79"`
Dec 05 08:51:09.923 INFO running `"docker" "rm" "-f" "abe0d556fdf9ed191dfb1eae2fcd32e85f967285f1a19f30c8c7089f82fcde79"`
Dec 05 08:51:10.267 INFO [stdout] abe0d556fdf9ed191dfb1eae2fcd32e85f967285f1a19f30c8c7089f82fcde79