[INFO] updating cached repository https://github.com/flevesqu42/42_multilayer_perceptron
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3174d89e39d3bc0bca78f72eb539bdf402e9bda1
[INFO] checking flevesqu42/42_multilayer_perceptron against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflevesqu42%2F42_multilayer_perceptron" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flevesqu42/42_multilayer_perceptron on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/flevesqu42/42_multilayer_perceptron
[INFO] finished tweaking git repo https://github.com/flevesqu42/42_multilayer_perceptron
[INFO] tweaked toml for git repo https://github.com/flevesqu42/42_multilayer_perceptron written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/flevesqu42/42_multilayer_perceptron already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1d4f52d2dc3f4d7590a28d6cb41ebe3910f291150b6cac95ef566a9f13016522
[INFO] running `"docker" "start" "-a" "1d4f52d2dc3f4d7590a28d6cb41ebe3910f291150b6cac95ef566a9f13016522"`
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking multilayer_perceptron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/perceptron/gradient_descent.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/perceptron/training.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |         rng.shuffle(& mut training_dataset);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/perceptron/gradient_descent.rs:28:7
[INFO] [stderr]    |
[INFO] [stderr] 28 |         rng.shuffle(training_dataset);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/perceptron/gradient_descent.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `features_count`
[INFO] [stderr]   --> src/dataset/mod.rs:52:2
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn features_count(& self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `output_size`
[INFO] [stderr]   --> src/dataset/mod.rs:56:2
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn output_size(& self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `VERBOSE`
[INFO] [stderr]  --> src/perceptron/configuration.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub static VERBOSE : bool = true;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/perceptron/training.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |         rng.shuffle(& mut training_dataset);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rand::Rng::shuffle': use SliceRandom::shuffle instead
[INFO] [stderr]   --> src/perceptron/gradient_descent.rs:28:7
[INFO] [stderr]    |
[INFO] [stderr] 28 |         rng.shuffle(training_dataset);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matrix`
[INFO] [stderr]  --> src/maths/matrix/tests.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let matrix = Matrix::new(vec![vec![]]);
[INFO] [stderr]   |         ^^^^^^ help: consider prefixing with an underscore: `_matrix`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matrix`
[INFO] [stderr]   --> src/maths/matrix/tests.rs:13:6
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let matrix = Matrix::new(vec![]);
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vector`
[INFO] [stderr]   --> src/maths/matrix/tests.rs:31:6
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let vector = Vector::new(vec![]);
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_vector`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `features_count`
[INFO] [stderr]   --> src/dataset/mod.rs:52:2
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn features_count(& self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `output_size`
[INFO] [stderr]   --> src/dataset/mod.rs:56:2
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn output_size(& self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `VERBOSE`
[INFO] [stderr]  --> src/perceptron/configuration.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub static VERBOSE : bool = true;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.08s
[INFO] running `"docker" "inspect" "1d4f52d2dc3f4d7590a28d6cb41ebe3910f291150b6cac95ef566a9f13016522"`
[INFO] running `"docker" "rm" "-f" "1d4f52d2dc3f4d7590a28d6cb41ebe3910f291150b6cac95ef566a9f13016522"`
[INFO] [stdout] 1d4f52d2dc3f4d7590a28d6cb41ebe3910f291150b6cac95ef566a9f13016522