Nov 28 20:20:33.482 INFO checking prophet-0.4.2 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 20:20:33.483 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-5/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 20:20:34.040 INFO [stdout] 431a1c3cd3f3ad8f9ef72026e78e1f9746d0e4800cbd1797845f795596a0c9cd
Nov 28 20:20:34.042 INFO running `"docker" "start" "-a" "431a1c3cd3f3ad8f9ef72026e78e1f9746d0e4800cbd1797845f795596a0c9cd"`
Nov 28 20:20:36.323 INFO [stderr] usermod: no changes
Nov 28 20:20:36.473 INFO [stderr]    Compiling ndarray v0.10.14
Nov 28 20:20:46.467 INFO [stderr]     Checking ndarray-rand v0.6.1
Nov 28 20:20:47.677 INFO [stderr]     Checking prophet v0.4.2 (/source)
Nov 28 20:20:52.732 INFO [stderr] warning: unused return value of `std::borrow::ToOwned::to_owned` that must be used
Nov 28 20:20:52.733 INFO [stderr]    --> src/neural_net.rs:418:4
Nov 28 20:20:52.734 INFO [stderr]     |
Nov 28 20:20:52.734 INFO [stderr] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
Nov 28 20:20:52.735 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 20:20:52.735 INFO [stderr]     |
Nov 28 20:20:52.736 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 20:20:52.737 INFO [stderr]     = note: cloning is often expensive and is not expected to have side effects
Nov 28 20:20:52.737 INFO [stderr] 
Nov 28 20:20:54.813 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.47s
Nov 28 20:20:54.820 INFO [stderr] su: No module specific data is present
Nov 28 20:20:56.443 INFO running `"docker" "inspect" "431a1c3cd3f3ad8f9ef72026e78e1f9746d0e4800cbd1797845f795596a0c9cd"`
Nov 28 20:20:56.857 INFO running `"docker" "rm" "-f" "431a1c3cd3f3ad8f9ef72026e78e1f9746d0e4800cbd1797845f795596a0c9cd"`
Nov 28 20:20:57.277 INFO [stdout] 431a1c3cd3f3ad8f9ef72026e78e1f9746d0e4800cbd1797845f795596a0c9cd