[INFO] cloning repository https://github.com/flevesqu42/42_multilayer_perceptron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flevesqu42/42_multilayer_perceptron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflevesqu42%2F42_multilayer_perceptron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflevesqu42%2F42_multilayer_perceptron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3174d89e39d3bc0bca78f72eb539bdf402e9bda1
[INFO] testing flevesqu42/42_multilayer_perceptron against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflevesqu42%2F42_multilayer_perceptron" "/workspace/builds/worker-43/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-43/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flevesqu42/42_multilayer_perceptron on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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 /workspace/builds/worker-43/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e73aadae5700cc527a9a8ff6c64bbc3f8e75bf39f945b5a6af42a8331908a9fb
[INFO] running `Command { std: "docker" "start" "-a" "e73aadae5700cc527a9a8ff6c64bbc3f8e75bf39f945b5a6af42a8331908a9fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e73aadae5700cc527a9a8ff6c64bbc3f8e75bf39f945b5a6af42a8331908a9fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73aadae5700cc527a9a8ff6c64bbc3f8e75bf39f945b5a6af42a8331908a9fb", kill_on_drop: false }`
[INFO] [stdout] e73aadae5700cc527a9a8ff6c64bbc3f8e75bf39f945b5a6af42a8331908a9fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb9c5665126ccf0c11dcd64ff99ba9ef9f0514e2357ccb4fd418c3014c4ca492
[INFO] running `Command { std: "docker" "start" "-a" "cb9c5665126ccf0c11dcd64ff99ba9ef9f0514e2357ccb4fd418c3014c4ca492", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling serde_yaml v0.8.8
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling multilayer_perceptron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/perceptron/gradient_descent.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rng::shuffle`: use SliceRandom::shuffle instead
[INFO] [stdout]   --> src/perceptron/training.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |         rng.shuffle(& mut training_dataset);
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rng::shuffle`: use SliceRandom::shuffle instead
[INFO] [stdout]   --> src/perceptron/gradient_descent.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 |         rng.shuffle(training_dataset);
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `features_count`
[INFO] [stdout]   --> src/dataset/mod.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn features_count(& self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `output_size`
[INFO] [stdout]   --> src/dataset/mod.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn output_size(& self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `VERBOSE`
[INFO] [stdout]  --> src/perceptron/configuration.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub static VERBOSE : bool = true;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `Command { std: "docker" "inspect" "cb9c5665126ccf0c11dcd64ff99ba9ef9f0514e2357ccb4fd418c3014c4ca492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb9c5665126ccf0c11dcd64ff99ba9ef9f0514e2357ccb4fd418c3014c4ca492", kill_on_drop: false }`
[INFO] [stdout] cb9c5665126ccf0c11dcd64ff99ba9ef9f0514e2357ccb4fd418c3014c4ca492
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7aa577eed1cb46fce420a93342b1df7509b08ff80b2808c9d6622365ea5c7473
[INFO] running `Command { std: "docker" "start" "-a" "7aa577eed1cb46fce420a93342b1df7509b08ff80b2808c9d6622365ea5c7473", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling multilayer_perceptron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/perceptron/gradient_descent.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rng::shuffle`: use SliceRandom::shuffle instead
[INFO] [stdout]   --> src/perceptron/training.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |         rng.shuffle(& mut training_dataset);
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rng::shuffle`: use SliceRandom::shuffle instead
[INFO] [stdout]   --> src/perceptron/gradient_descent.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 |         rng.shuffle(training_dataset);
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]  --> src/maths/matrix/tests.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let matrix = Matrix::new(vec![vec![]]);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]   --> src/maths/matrix/tests.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let matrix = Matrix::new(vec![]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vector`
[INFO] [stdout]   --> src/maths/matrix/tests.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let vector = Vector::new(vec![]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vector`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `features_count`
[INFO] [stdout]   --> src/dataset/mod.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn features_count(& self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `output_size`
[INFO] [stdout]   --> src/dataset/mod.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn output_size(& self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `VERBOSE`
[INFO] [stdout]  --> src/perceptron/configuration.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub static VERBOSE : bool = true;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "7aa577eed1cb46fce420a93342b1df7509b08ff80b2808c9d6622365ea5c7473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aa577eed1cb46fce420a93342b1df7509b08ff80b2808c9d6622365ea5c7473", kill_on_drop: false }`
[INFO] [stdout] 7aa577eed1cb46fce420a93342b1df7509b08ff80b2808c9d6622365ea5c7473
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfe85332aebd66e76a25014157a2ec3465ca2e7e31eb20888b4af0634e01c66a
[INFO] running `Command { std: "docker" "start" "-a" "dfe85332aebd66e76a25014157a2ec3465ca2e7e31eb20888b4af0634e01c66a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stdout] running 31 tests
[INFO] [stderr]  --> src/perceptron/gradient_descent.rs:5:5
[INFO] [stdout] test maths::matrix::tests::add_matrix_matrix ... ok
[INFO] [stderr]   |
[INFO] [stdout] test maths::matrix::tests::add_vector_vector ... ok
[INFO] [stderr] 5 | use std::mem;
[INFO] [stdout] test maths::matrix::tests::dot ... ok
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stdout] test maths::matrix::tests::hadamard_inplace_matrix_matrix ... ok
[INFO] [stderr]   |
[INFO] [stdout] test maths::matrix::tests::hadamard_inplace_matrix_vector ... ok
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] test maths::matrix::tests::hadamard_inplace_vector_matrix ... ok
[INFO] [stderr] 
[INFO] [stdout] test maths::matrix::tests::hadamard_inplace_vector_vector ... ok
[INFO] [stderr] warning: use of deprecated associated function `rand::Rng::shuffle`: use SliceRandom::shuffle instead
[INFO] [stdout] test maths::matrix::tests::hadamard_matrix_matrix ... ok
[INFO] [stderr]   --> src/perceptron/training.rs:13:7
[INFO] [stdout] test maths::matrix::tests::hadamard_vector_matrix ... ok
[INFO] [stderr]    |
[INFO] [stdout] test maths::matrix::tests::hadamard_matrix_vector ... ok
[INFO] [stderr] 13 |         rng.shuffle(& mut training_dataset);
[INFO] [stdout] test maths::matrix::tests::matrix_transpose_1r ... ok
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stdout] test maths::matrix::tests::hadamard_vector_vector ... ok
[INFO] [stderr]    |
[INFO] [stdout] test maths::matrix::tests::matrix_transpose_3r ... ok
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] test maths::matrix::tests::matrix_transpose_4r ... ok
[INFO] [stderr] 
[INFO] [stdout] test maths::matrix::tests::mul_matrix_matrix ... ok
[INFO] [stderr] warning: use of deprecated associated function `rand::Rng::shuffle`: use SliceRandom::shuffle instead
[INFO] [stdout] test maths::matrix::tests::mul_matrix_vector ... ok
[INFO] [stderr]   --> src/perceptron/gradient_descent.rs:28:7
[INFO] [stdout] test maths::matrix::tests::mul_vector_matrix ... ok
[INFO] [stderr]    |
[INFO] [stdout] test maths::matrix::tests::new_matrix ... ok
[INFO] [stderr] 28 |         rng.shuffle(training_dataset);
[INFO] [stdout] test maths::matrix::tests::new_vector ... ok
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stdout] test maths::matrix::tests::scalar_matrix ... ok
[INFO] [stderr] 
[INFO] [stdout] test maths::matrix::tests::scalar_vector ... ok
[INFO] [stderr] warning: unused variable: `matrix`
[INFO] [stdout] test maths::matrix::tests::matrix_transpose_2r ... ok
[INFO] [stderr]  --> src/maths/matrix/tests.rs:7:6
[INFO] [stdout] test maths::matrix::tests::sub_vector_vector ... ok
[INFO] [stderr]   |
[INFO] [stdout] test maths::matrix::tests::sub_matrix_matrix ... ok
[INFO] [stderr] 7 |     let matrix = Matrix::new(vec![vec![]]);
[INFO] [stdout] test maths::matrix::tests::vector_transpose ... ok
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] test maths::matrix::tests::dot_fail - should panic ... ok
[INFO] [stderr]   |
[INFO] [stdout] test maths::matrix::tests::hadamard_fail - should panic ... ok
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] test maths::matrix::tests::hadamard_inplace_fail - should panic ... ok
[INFO] [stderr] 
[INFO] [stdout] test maths::matrix::tests::new_matrix_empty_col - should panic ... ok
[INFO] [stderr] warning: unused variable: `matrix`
[INFO] [stdout] test maths::matrix::tests::new_matrix_empty_row - should panic ... ok
[INFO] [stderr]   --> src/maths/matrix/tests.rs:13:6
[INFO] [stdout] test maths::matrix::tests::new_vector_empty - should panic ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 13 |     let matrix = Matrix::new(vec![]);
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout] 
[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: if this is intentional, prefix it with an underscore: `_vector`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `features_count`
[INFO] [stderr]   --> src/dataset/mod.rs:52:9
[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: associated function is never used: `output_size`
[INFO] [stderr]   --> src/dataset/mod.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn output_size(& self) -> usize {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static 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: `multilayer_perceptron` (bin "multilayer_perceptron" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.64s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/multilayer_perceptron-b25112cd2674eed6)
[INFO] running `Command { std: "docker" "inspect" "dfe85332aebd66e76a25014157a2ec3465ca2e7e31eb20888b4af0634e01c66a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe85332aebd66e76a25014157a2ec3465ca2e7e31eb20888b4af0634e01c66a", kill_on_drop: false }`
[INFO] [stdout] dfe85332aebd66e76a25014157a2ec3465ca2e7e31eb20888b4af0634e01c66a