[INFO] crate prophet 0.4.2 is already in cache
[INFO] extracting crate prophet 0.4.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/prophet/0.4.2
[INFO] extracting crate prophet 0.4.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prophet/0.4.2
[INFO] validating manifest of prophet-0.4.2 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of prophet-0.4.2 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing prophet-0.4.2
[INFO] finished frobbing prophet-0.4.2
[INFO] frobbed toml for prophet-0.4.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/prophet/0.4.2/Cargo.toml
[INFO] started frobbing prophet-0.4.2
[INFO] finished frobbing prophet-0.4.2
[INFO] frobbed toml for prophet-0.4.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prophet/0.4.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing prophet-0.4.2 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prophet/0.4.2:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 305bda3a7b4bc9363ef56e1d4d8b57ffbb0221a04d58b1f3e7ad25e25e540668
[INFO] running `"docker" "start" "-a" "305bda3a7b4bc9363ef56e1d4d8b57ffbb0221a04d58b1f3e7ad25e25e540668"`
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]    Compiling ndarray-rand v0.6.1
[INFO] [stderr]    Compiling prophet v0.4.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.00s
[INFO] running `"docker" "inspect" "305bda3a7b4bc9363ef56e1d4d8b57ffbb0221a04d58b1f3e7ad25e25e540668"`
[INFO] running `"docker" "rm" "-f" "305bda3a7b4bc9363ef56e1d4d8b57ffbb0221a04d58b1f3e7ad25e25e540668"`
[INFO] [stdout] 305bda3a7b4bc9363ef56e1d4d8b57ffbb0221a04d58b1f3e7ad25e25e540668
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prophet/0.4.2:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] fe532cfeee4321ae842b8a3edcf1ad7623c86081cc0b572d818cfe0a95b1f2c2
[INFO] running `"docker" "start" "-a" "fe532cfeee4321ae842b8a3edcf1ad7623c86081cc0b572d818cfe0a95b1f2c2"`
[INFO] [stderr]    Compiling prophet v0.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::borrow::ToOwned::to_owned` that must be used
[INFO] [stderr]    --> src/neural_net.rs:418:4
[INFO] [stderr]     |
[INFO] [stderr] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `"docker" "inspect" "fe532cfeee4321ae842b8a3edcf1ad7623c86081cc0b572d818cfe0a95b1f2c2"`
[INFO] running `"docker" "rm" "-f" "fe532cfeee4321ae842b8a3edcf1ad7623c86081cc0b572d818cfe0a95b1f2c2"`
[INFO] [stdout] fe532cfeee4321ae842b8a3edcf1ad7623c86081cc0b572d818cfe0a95b1f2c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prophet/0.4.2:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 07dd06b0050b7b9f165cefb1aa86dbcf393b21a173262a328cf0d4f48fe3ae58
[INFO] running `"docker" "start" "-a" "07dd06b0050b7b9f165cefb1aa86dbcf393b21a173262a328cf0d4f48fe3ae58"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/prophet-874e3c141de151f4
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test activation::tests::binary_step ... ok
[INFO] [stdout] test activation::tests::identity ... ok
[INFO] [stdout] test activation::tests::sinusoid ... ok
[INFO] [stdout] test activation::tests::relu ... ok
[INFO] [stdout] test activation::tests::softsign ... ok
[INFO] [stdout] test activation::tests::tanh ... ok
[INFO] [stdout] test mentor::samples::tests::missing_both_brackets ... ok
[INFO] [stdout] test mentor::samples::tests::missing_left_brackets ... ok
[INFO] [stdout] test neural_net::tests::equivalence ... ignored
[INFO] [stdout] test mentor::samples::tests::missing_right_brackets ... ok
[INFO] [stdout] test mentor::samples::tests::sample_and_vec_equal ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::construction_invariants ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::feed_forward ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::propagate_gradients ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::update_output_gradients ... ok
[INFO] [stdout] test topology::tests::construction ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::update_weights ... ok
[INFO] [stdout] test activation::tests::arctan ... ok
[INFO] [stdout] test activation::tests::bent_identity ... ok
[INFO] [stdout] test activation::tests::gaussian ... ok
[INFO] [stdout] test activation::tests::softplus ... ok
[INFO] [stdout] test activation::tests::logistic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/integration-b6836f51320fb6ff
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test train_constant ... ok
[INFO] [stdout] test train_and ... ok
[INFO] [stdout] test train_triple_add ... ok
[INFO] [stdout] test train_compare ... ok
[INFO] [stdout] test train_xor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prophet
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/mentor/samples.rs - samples (line 81) ... ok
[INFO] [stdout] test src/mentor/samples.rs - samples (line 108) ... ok
[INFO] [stdout] test src/mentor/samples.rs - samples (line 89) ... ok
[INFO] [stdout] test src/lib.rs -  (line 19) ... ok
[INFO] [stdout] test src/lib.rs -  (line 63) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "07dd06b0050b7b9f165cefb1aa86dbcf393b21a173262a328cf0d4f48fe3ae58"`
[INFO] running `"docker" "rm" "-f" "07dd06b0050b7b9f165cefb1aa86dbcf393b21a173262a328cf0d4f48fe3ae58"`
[INFO] [stdout] 07dd06b0050b7b9f165cefb1aa86dbcf393b21a173262a328cf0d4f48fe3ae58