[INFO] cloning repository https://github.com/ArturMarschenkulov/rusty_neural_networks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArturMarschenkulov/rusty_neural_networks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArturMarschenkulov%2Frusty_neural_networks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArturMarschenkulov%2Frusty_neural_networks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c916d9b012f9b4a95c5c2cd2bab8ca98742c726d
[INFO] testing ArturMarschenkulov/rusty_neural_networks against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArturMarschenkulov%2Frusty_neural_networks" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArturMarschenkulov/rusty_neural_networks
[INFO] finished tweaking git repo https://github.com/ArturMarschenkulov/rusty_neural_networks
[INFO] tweaked toml for git repo https://github.com/ArturMarschenkulov/rusty_neural_networks written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArturMarschenkulov/rusty_neural_networks on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArturMarschenkulov/rusty_neural_networks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82a7d2fb3461c502fa9b6540a5a0d97969bb35954d109a40c4e8276e09c4cff0
[INFO] running `Command { std: "docker" "start" "-a" "82a7d2fb3461c502fa9b6540a5a0d97969bb35954d109a40c4e8276e09c4cff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82a7d2fb3461c502fa9b6540a5a0d97969bb35954d109a40c4e8276e09c4cff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82a7d2fb3461c502fa9b6540a5a0d97969bb35954d109a40c4e8276e09c4cff0", kill_on_drop: false }`
[INFO] [stdout] 82a7d2fb3461c502fa9b6540a5a0d97969bb35954d109a40c4e8276e09c4cff0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc42258e0e01273d80af08483270cfa4c87cd81ac6896efe7ced64242b772d77
[INFO] running `Command { std: "docker" "start" "-a" "dc42258e0e01273d80af08483270cfa4c87cd81ac6896efe7ced64242b772d77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-complex v0.4.2
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling rusty_neural_networks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `previous_layer`
[INFO] [stdout]   --> src/network.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn backprop(&self, previous_layer: &Layer) -> Layer {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_layer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let ss = nd::Array2::<f64>::from_shape_vec((4, 1), vec![1., 2., 3., 4.]).unwrap();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_labels`
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let test_labels = data_test.slice(nd::s![0, ..]);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_pixels`
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let test_pixels = test_pixels.map(|x| *x / 255.0);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_pixels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Relu`, `Identity`, `Sigmoid`, and `Tanh` are never constructed
[INFO] [stdout]  --> src/activation.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Activation {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 5 |     Relu,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     LeakyRelu,
[INFO] [stdout] 7 |     Identity,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 8 |     Sigmoid,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     Tanh,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Activation` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `backprop` is never used
[INFO] [stdout]   --> src/network.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Layer {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn backprop(&self, previous_layer: &Layer) -> Layer {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `layers_num` is never read
[INFO] [stdout]   --> src/network.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 42 |     layers_num: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `make_prediction` is never used
[INFO] [stdout]    --> src/network.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 48  | impl Network {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn make_prediction(&self, x: &nd::Array2<f64>) -> nd::Array1<u64> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.58s
[INFO] running `Command { std: "docker" "inspect" "dc42258e0e01273d80af08483270cfa4c87cd81ac6896efe7ced64242b772d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc42258e0e01273d80af08483270cfa4c87cd81ac6896efe7ced64242b772d77", kill_on_drop: false }`
[INFO] [stdout] dc42258e0e01273d80af08483270cfa4c87cd81ac6896efe7ced64242b772d77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fba922febe5566771a808b1176c14eac8604b169c9ee383002db1693be4b2823
[INFO] running `Command { std: "docker" "start" "-a" "fba922febe5566771a808b1176c14eac8604b169c9ee383002db1693be4b2823", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty_neural_networks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `previous_layer`
[INFO] [stdout]   --> src/network.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn backprop(&self, previous_layer: &Layer) -> Layer {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_layer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let ss = nd::Array2::<f64>::from_shape_vec((4, 1), vec![1., 2., 3., 4.]).unwrap();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_labels`
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let test_labels = data_test.slice(nd::s![0, ..]);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_pixels`
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let test_pixels = test_pixels.map(|x| *x / 255.0);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_pixels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Relu`, `Identity`, `Sigmoid`, and `Tanh` are never constructed
[INFO] [stdout]  --> src/activation.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Activation {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 5 |     Relu,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     LeakyRelu,
[INFO] [stdout] 7 |     Identity,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 8 |     Sigmoid,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     Tanh,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Activation` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `backprop` is never used
[INFO] [stdout]   --> src/network.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Layer {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn backprop(&self, previous_layer: &Layer) -> Layer {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `layers_num` is never read
[INFO] [stdout]   --> src/network.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 42 |     layers_num: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `make_prediction` is never used
[INFO] [stdout]    --> src/network.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 48  | impl Network {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn make_prediction(&self, x: &nd::Array2<f64>) -> nd::Array1<u64> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "fba922febe5566771a808b1176c14eac8604b169c9ee383002db1693be4b2823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fba922febe5566771a808b1176c14eac8604b169c9ee383002db1693be4b2823", kill_on_drop: false }`
[INFO] [stdout] fba922febe5566771a808b1176c14eac8604b169c9ee383002db1693be4b2823
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9314dd81a8835c58f518ba51e695dfba81c352e8e0012e218d50a2b25c293700
[INFO] running `Command { std: "docker" "start" "-a" "9314dd81a8835c58f518ba51e695dfba81c352e8e0012e218d50a2b25c293700", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `previous_layer`
[INFO] [stderr]   --> src/network.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn backprop(&self, previous_layer: &Layer) -> Layer {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_layer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ss`
[INFO] [stderr]   --> src/main.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let ss = nd::Array2::<f64>::from_shape_vec((4, 1), vec![1., 2., 3., 4.]).unwrap();
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ss`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_labels`
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let test_labels = data_test.slice(nd::s![0, ..]);
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_pixels`
[INFO] [stderr]   --> src/main.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let test_pixels = test_pixels.map(|x| *x / 255.0);
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_pixels`
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Relu`, `Identity`, `Sigmoid`, and `Tanh` are never constructed
[INFO] [stderr]  --> src/activation.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub enum Activation {
[INFO] [stderr]   |          ---------- variants in this enum
[INFO] [stderr] 5 |     Relu,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 6 |     LeakyRelu,
[INFO] [stderr] 7 |     Identity,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 8 |     Sigmoid,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 9 |     Tanh,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Activation` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `backprop` is never used
[INFO] [stderr]   --> src/network.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl Layer {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 17 |     fn backprop(&self, previous_layer: &Layer) -> Layer {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `layers_num` is never read
[INFO] [stderr]   --> src/network.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub struct Network {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 42 |     layers_num: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `make_prediction` is never used
[INFO] [stderr]    --> src/network.rs:157:12
[INFO] [stderr]     |
[INFO] [stderr] 48  | impl Network {
[INFO] [stderr]     | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 157 |     pub fn make_prediction(&self, x: &nd::Array2<f64>) -> nd::Array1<u64> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty_neural_networks` (bin "rusty_neural_networks" test) generated 8 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rusty_neural_networks-5eade12c391f4bef)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9314dd81a8835c58f518ba51e695dfba81c352e8e0012e218d50a2b25c293700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9314dd81a8835c58f518ba51e695dfba81c352e8e0012e218d50a2b25c293700", kill_on_drop: false }`
[INFO] [stdout] 9314dd81a8835c58f518ba51e695dfba81c352e8e0012e218d50a2b25c293700
