[INFO] cloning repository https://github.com/loboyd/nn-from-scratch-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loboyd/nn-from-scratch-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fnn-from-scratch-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fnn-from-scratch-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4ab62e401d54ce74d0cee6ccc16a6b8af9ba222
[INFO] testing loboyd/nn-from-scratch-in-rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fnn-from-scratch-in-rust" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loboyd/nn-from-scratch-in-rust 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/loboyd/nn-from-scratch-in-rust
[INFO] finished tweaking git repo https://github.com/loboyd/nn-from-scratch-in-rust
[INFO] tweaked toml for git repo https://github.com/loboyd/nn-from-scratch-in-rust written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/loboyd/nn-from-scratch-in-rust 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 }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] f8aa93edebbac16d7030d27435ca58424bb3bba5b9100b11a2be312b45302af2
[INFO] running `Command { std: "docker" "start" "-a" "f8aa93edebbac16d7030d27435ca58424bb3bba5b9100b11a2be312b45302af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8aa93edebbac16d7030d27435ca58424bb3bba5b9100b11a2be312b45302af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8aa93edebbac16d7030d27435ca58424bb3bba5b9100b11a2be312b45302af2", kill_on_drop: false }`
[INFO] [stdout] f8aa93edebbac16d7030d27435ca58424bb3bba5b9100b11a2be312b45302af2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] c274eb63cc6bd19d97863811ce82f61e0bc1c3f3d64510061fbaad564e305560
[INFO] running `Command { std: "docker" "start" "-a" "c274eb63cc6bd19d97863811ce82f61e0bc1c3f3d64510061fbaad564e305560", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/perceptron.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let output = self.feed_forward_train(&mut training_cache, input);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_layer_error`
[INFO] [stdout]    --> src/perceptron.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let last_layer_error = grad_cost_wrt_last_layer_activation
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_layer_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/perceptron.rs:84:42
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn grad(&mut self, input: &Vec<f32>, label: Vec<f32>) {
[INFO] [stdout]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `n_layers`
[INFO] [stdout]  --> src/perceptron.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     n_layers: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Perceptron` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/perceptron.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `weighted_input`
[INFO] [stdout]   --> src/perceptron.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     weighted_input: Vec<f32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `LayerTrainingCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/perceptron.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `activated_output`
[INFO] [stdout]   --> src/perceptron.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     activated_output: Vec<f32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `LayerTrainingCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/perceptron.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `feed_forward_train`
[INFO] [stdout]   --> src/perceptron.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn feed_forward_train(&self, training_cache: &mut TrainingCache, input: &Vec<f32>) -> Vec<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cost`
[INFO] [stdout]   --> src/perceptron.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn cost(&self, input: &Vec<f32>, label: Vec<f32>) -> f32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grad_cost_last_layer`
[INFO] [stdout]   --> src/perceptron.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn grad_cost_last_layer(input: f32, last_layer_activation: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grad`
[INFO] [stdout]   --> src/perceptron.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn grad(&mut self, input: &Vec<f32>, label: Vec<f32>) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sigmoid_derivative`
[INFO] [stdout]  --> src/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn sigmoid_derivative(x: f32) -> f32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sigmoid_derivative_vector`
[INFO] [stdout]  --> src/utils.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn sigmoid_derivative_vector(x: &Vec<f32>) -> Vec<f32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "c274eb63cc6bd19d97863811ce82f61e0bc1c3f3d64510061fbaad564e305560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c274eb63cc6bd19d97863811ce82f61e0bc1c3f3d64510061fbaad564e305560", kill_on_drop: false }`
[INFO] [stdout] c274eb63cc6bd19d97863811ce82f61e0bc1c3f3d64510061fbaad564e305560
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 79137e6785abbb089fc5d840d02df0cba3684beb5a148f63054c91e745c9fcc3
[INFO] running `Command { std: "docker" "start" "-a" "79137e6785abbb089fc5d840d02df0cba3684beb5a148f63054c91e745c9fcc3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/perceptron.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let output = self.feed_forward_train(&mut training_cache, input);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_layer_error`
[INFO] [stdout]    --> src/perceptron.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let last_layer_error = grad_cost_wrt_last_layer_activation
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_layer_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/perceptron.rs:84:42
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn grad(&mut self, input: &Vec<f32>, label: Vec<f32>) {
[INFO] [stdout]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `n_layers`
[INFO] [stdout]  --> src/perceptron.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     n_layers: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Perceptron` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/perceptron.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `weighted_input`
[INFO] [stdout]   --> src/perceptron.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     weighted_input: Vec<f32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `LayerTrainingCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/perceptron.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `activated_output`
[INFO] [stdout]   --> src/perceptron.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     activated_output: Vec<f32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `LayerTrainingCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/perceptron.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `feed_forward_train`
[INFO] [stdout]   --> src/perceptron.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn feed_forward_train(&self, training_cache: &mut TrainingCache, input: &Vec<f32>) -> Vec<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cost`
[INFO] [stdout]   --> src/perceptron.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn cost(&self, input: &Vec<f32>, label: Vec<f32>) -> f32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grad_cost_last_layer`
[INFO] [stdout]   --> src/perceptron.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn grad_cost_last_layer(input: f32, last_layer_activation: f32) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grad`
[INFO] [stdout]   --> src/perceptron.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn grad(&mut self, input: &Vec<f32>, label: Vec<f32>) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sigmoid_derivative_vector`
[INFO] [stdout]  --> src/utils.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn sigmoid_derivative_vector(x: &Vec<f32>) -> Vec<f32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.45s
[INFO] running `Command { std: "docker" "inspect" "79137e6785abbb089fc5d840d02df0cba3684beb5a148f63054c91e745c9fcc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79137e6785abbb089fc5d840d02df0cba3684beb5a148f63054c91e745c9fcc3", kill_on_drop: false }`
[INFO] [stdout] 79137e6785abbb089fc5d840d02df0cba3684beb5a148f63054c91e745c9fcc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] a95f8e590adbfc409d884f35ed6291f41857c523b744e81f35c1a8f49751b691
[INFO] running `Command { std: "docker" "start" "-a" "a95f8e590adbfc409d884f35ed6291f41857c523b744e81f35c1a8f49751b691", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/perceptron.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let output = self.feed_forward_train(&mut training_cache, input);
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `last_layer_error`
[INFO] [stderr]    --> src/perceptron.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |         let last_layer_error = grad_cost_wrt_last_layer_activation
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_layer_error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]   --> src/perceptron.rs:84:42
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn grad(&mut self, input: &Vec<f32>, label: Vec<f32>) {
[INFO] [stderr]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `n_layers`
[INFO] [stderr]  --> src/perceptron.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     n_layers: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Perceptron` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/perceptron.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[derive(Debug)]
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `weighted_input`
[INFO] [stderr]   --> src/perceptron.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     weighted_input: Vec<f32>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `LayerTrainingCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/perceptron.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `activated_output`
[INFO] [stderr]   --> src/perceptron.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     activated_output: Vec<f32>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `LayerTrainingCache` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/perceptron.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `feed_forward_train`
[INFO] [stderr]   --> src/perceptron.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn feed_forward_train(&self, training_cache: &mut TrainingCache, input: &Vec<f32>) -> Vec<f32> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cost`
[INFO] [stderr]   --> src/perceptron.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn cost(&self, input: &Vec<f32>, label: Vec<f32>) -> f32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `grad_cost_last_layer`
[INFO] [stderr]   --> src/perceptron.rs:80:8
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn grad_cost_last_layer(input: f32, last_layer_activation: f32) -> f32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `grad`
[INFO] [stderr]   --> src/perceptron.rs:84:8
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn grad(&mut self, input: &Vec<f32>, label: Vec<f32>) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sigmoid_derivative_vector`
[INFO] [stderr]  --> src/utils.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn sigmoid_derivative_vector(x: &Vec<f32>) -> Vec<f32> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `nn` (bin "nn" test) generated 11 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.55s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nn-e4ecc6175a09fd76)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test matrix::matrix_transpose_check ... ok
[INFO] [stdout] test utils::sigmoid_derivative_neg999_0 ... ok
[INFO] [stdout] test utils::sigmoid_derivative_0_0point5 ... ok
[INFO] [stdout] test utils::sigmoid_singleton_0_0point5 ... ok
[INFO] [stdout] test utils::sigmoid_singleton_neg999_0 ... ok
[INFO] [stdout] test utils::sigmoid_derivative_999_0 ... ok
[INFO] [stdout] test utils::sigmoid_singleton_999_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a95f8e590adbfc409d884f35ed6291f41857c523b744e81f35c1a8f49751b691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a95f8e590adbfc409d884f35ed6291f41857c523b744e81f35c1a8f49751b691", kill_on_drop: false }`
[INFO] [stdout] a95f8e590adbfc409d884f35ed6291f41857c523b744e81f35c1a8f49751b691