[INFO] cloning repository https://github.com/drakeor/rust-neural-net
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drakeor/rust-neural-net" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrakeor%2Frust-neural-net", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrakeor%2Frust-neural-net'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d6ac4a97deb7595a5aff9b75e00b8fa0dc2bdad8
[INFO] testing drakeor/rust-neural-net against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrakeor%2Frust-neural-net" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/drakeor/rust-neural-net on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/drakeor/rust-neural-net
[INFO] finished tweaking git repo https://github.com/drakeor/rust-neural-net
[INFO] tweaked toml for git repo https://github.com/drakeor/rust-neural-net written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/drakeor/rust-neural-net already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rulinalg v0.4.2
[INFO] [stderr]   Downloaded libc v0.2.41
[INFO] [stderr]   Downloaded rand_core v0.2.0
[INFO] [stderr]   Downloaded rand v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4f572593801f8cb8ed50b9f7c32975426767e40cc8c7fa80b9e2ae2b8185b7c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f4f572593801f8cb8ed50b9f7c32975426767e40cc8c7fa80b9e2ae2b8185b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4f572593801f8cb8ed50b9f7c32975426767e40cc8c7fa80b9e2ae2b8185b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4f572593801f8cb8ed50b9f7c32975426767e40cc8c7fa80b9e2ae2b8185b7c", kill_on_drop: false }`
[INFO] [stdout] f4f572593801f8cb8ed50b9f7c32975426767e40cc8c7fa80b9e2ae2b8185b7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08c1b2ad5e7b18f24f5716bd4b0b02c463167b3b1c91a22e0647cf1e2df84d81
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "08c1b2ad5e7b18f24f5716bd4b0b02c463167b3b1c91a22e0647cf1e2df84d81", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling rand_core v0.2.0
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling rand v0.5.0
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rulinalg v0.4.2
[INFO] [stderr]    Compiling rust_neuralnet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `inputLayerSize`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     inputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outputLayerSize`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hiddenLayerSize`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     hiddenLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `inputLayerSize` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     inputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `input_layer_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `outputLayerSize` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `output_layer_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `hiddenLayerSize` should have a snake case name
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     hiddenLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `hidden_layer_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `costFunctionPrime` should have a snake case name
[INFO] [stdout]   --> src/main.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn costFunctionPrime(&mut self, X : Matrix<f32>, y : Matrix<f32>) -> (Matrix<f32>, Matrix<f32>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `cost_function_prime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/main.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn costFunctionPrime(&mut self, X : Matrix<f32>, y : Matrix<f32>) -> (Matrix<f32>, Matrix<f32>) {
[INFO] [stdout]    |                                         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `yHat` should have a snake case name
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let yHat = self.forward(X.clone());
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `y_hat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let X = Matrix::new(3, 2, vec![
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.02s
[INFO] running `Command { std: "docker" "inspect" "08c1b2ad5e7b18f24f5716bd4b0b02c463167b3b1c91a22e0647cf1e2df84d81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08c1b2ad5e7b18f24f5716bd4b0b02c463167b3b1c91a22e0647cf1e2df84d81", kill_on_drop: false }`
[INFO] [stdout] 08c1b2ad5e7b18f24f5716bd4b0b02c463167b3b1c91a22e0647cf1e2df84d81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 119e01be4685157e4ec7fd1d447f31656a788d08cc3e4696f9adb0b93721a8a8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "119e01be4685157e4ec7fd1d447f31656a788d08cc3e4696f9adb0b93721a8a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_neuralnet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `inputLayerSize`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     inputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outputLayerSize`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hiddenLayerSize`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     hiddenLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `inputLayerSize` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     inputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `input_layer_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `outputLayerSize` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outputLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `output_layer_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `hiddenLayerSize` should have a snake case name
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     hiddenLayerSize : i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `hidden_layer_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `costFunctionPrime` should have a snake case name
[INFO] [stdout]   --> src/main.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn costFunctionPrime(&mut self, X : Matrix<f32>, y : Matrix<f32>) -> (Matrix<f32>, Matrix<f32>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `cost_function_prime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/main.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn costFunctionPrime(&mut self, X : Matrix<f32>, y : Matrix<f32>) -> (Matrix<f32>, Matrix<f32>) {
[INFO] [stdout]    |                                         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `yHat` should have a snake case name
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let yHat = self.forward(X.clone());
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `y_hat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let X = Matrix::new(3, 2, vec![
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "119e01be4685157e4ec7fd1d447f31656a788d08cc3e4696f9adb0b93721a8a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119e01be4685157e4ec7fd1d447f31656a788d08cc3e4696f9adb0b93721a8a8", kill_on_drop: false }`
[INFO] [stdout] 119e01be4685157e4ec7fd1d447f31656a788d08cc3e4696f9adb0b93721a8a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 145b151de3561b5b6e8c0f989053d27bd7fea1588819928e52c49a161ddd89da
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "145b151de3561b5b6e8c0f989053d27bd7fea1588819928e52c49a161ddd89da", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `inputLayerSize`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     inputLayerSize : i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `outputLayerSize`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     outputLayerSize : i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `hiddenLayerSize`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     hiddenLayerSize : i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `inputLayerSize` should have a snake case name
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     inputLayerSize : i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `input_layer_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `outputLayerSize` should have a snake case name
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     outputLayerSize : i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `output_layer_size`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `hiddenLayerSize` should have a snake case name
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     hiddenLayerSize : i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `hidden_layer_size`
[INFO] [stderr] 
[INFO] [stderr] warning: method `costFunctionPrime` should have a snake case name
[INFO] [stderr]   --> src/main.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn costFunctionPrime(&mut self, X : Matrix<f32>, y : Matrix<f32>) -> (Matrix<f32>, Matrix<f32>) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `cost_function_prime`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/main.rs:45:41
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn costFunctionPrime(&mut self, X : Matrix<f32>, y : Matrix<f32>) -> (Matrix<f32>, Matrix<f32>) {
[INFO] [stderr]    |                                         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `yHat` should have a snake case name
[INFO] [stderr]   --> src/main.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let yHat = self.forward(X.clone());
[INFO] [stderr]    |             ^^^^ help: convert the identifier to snake case: `y_hat`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/main.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let X = Matrix::new(3, 2, vec![
[INFO] [stderr]    |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_neuralnet-70788e8c7909df71
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_sigmoid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "145b151de3561b5b6e8c0f989053d27bd7fea1588819928e52c49a161ddd89da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "145b151de3561b5b6e8c0f989053d27bd7fea1588819928e52c49a161ddd89da", kill_on_drop: false }`
[INFO] [stdout] 145b151de3561b5b6e8c0f989053d27bd7fea1588819928e52c49a161ddd89da