[INFO] cloning repository https://github.com/DTomusk/NeuralBits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DTomusk/NeuralBits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDTomusk%2FNeuralBits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDTomusk%2FNeuralBits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 61bb85fb0f0379d331ecbce6a30fd49cbe4de7e2
[INFO] checking DTomusk/NeuralBits against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDTomusk%2FNeuralBits" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DTomusk/NeuralBits
[INFO] finished tweaking git repo https://github.com/DTomusk/NeuralBits
[INFO] tweaked toml for git repo https://github.com/DTomusk/NeuralBits written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DTomusk/NeuralBits on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DTomusk/NeuralBits 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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 363f4da8df8a6ab563c24e27e72063ca0e4bc31690e05b25c379ecc6eb081c57
[INFO] running `Command { std: "docker" "start" "-a" "363f4da8df8a6ab563c24e27e72063ca0e4bc31690e05b25c379ecc6eb081c57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "363f4da8df8a6ab563c24e27e72063ca0e4bc31690e05b25c379ecc6eb081c57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "363f4da8df8a6ab563c24e27e72063ca0e4bc31690e05b25c379ecc6eb081c57", kill_on_drop: false }`
[INFO] [stdout] 363f4da8df8a6ab563c24e27e72063ca0e4bc31690e05b25c379ecc6eb081c57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0e7f3feba90f00457900b400994fcbe06c316da6139622fcc40fee21bdc4603
[INFO] running `Command { std: "docker" "start" "-a" "b0e7f3feba90f00457900b400994fcbe06c316da6139622fcc40fee21bdc4603", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking sigmoid v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]  --> src/network.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::distributions::StandardNormal;
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated unit struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]  --> src/network.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::distributions::StandardNormal;
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated unit struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]   --> src/network.rs:40:71
[INFO] [stdout]    |
[INFO] [stdout] 40 |                     current_bias.push(SmallRng::from_entropy().sample(StandardNormal));
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated unit struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]   --> src/network.rs:65:68
[INFO] [stdout]    |
[INFO] [stdout] 65 |                         array.push(SmallRng::from_entropy().sample(StandardNormal));
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]  --> src/network.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::distributions::StandardNormal;
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated unit struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]  --> src/network.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::distributions::StandardNormal;
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated unit struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]   --> src/network.rs:40:71
[INFO] [stdout]    |
[INFO] [stdout] 40 |                     current_bias.push(SmallRng::from_entropy().sample(StandardNormal));
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated unit struct `network::rand::distributions::StandardNormal`: moved to rand_distr crate
[INFO] [stdout]   --> src/network.rs:65:68
[INFO] [stdout]    |
[INFO] [stdout] 65 |                         array.push(SmallRng::from_entropy().sample(StandardNormal));
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/network.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut my_net = Network {
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_layers`
[INFO] [stdout]   --> src/network.rs:51:38
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn set_weights(sizes: &Vec<i32>, num_layers: usize, random: bool) -> Vec<Vec<Vec<f64>>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_layers`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/network.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let n = training_data.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/network.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |         for j in 0..epochs {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut nabla_b = Network::set_biases(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut nabla_w = Network::set_weights(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mini_batch`
[INFO] [stdout]    --> src/network.rs:106:37
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn update_mini_batch(&mut self, mini_batch: &[(Vec<f64>,Vec<f64>)], eta: f64) {
[INFO] [stdout]     |                                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mini_batch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eta`
[INFO] [stdout]    --> src/network.rs:106:73
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn update_mini_batch(&mut self, mini_batch: &[(Vec<f64>,Vec<f64>)], eta: f64) {
[INFO] [stdout]     |                                                                         ^^^ help: if this is intentional, prefix it with an underscore: `_eta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nabla_b`
[INFO] [stdout]    --> src/network.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut nabla_b = Network::set_biases(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nabla_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nabla_w`
[INFO] [stdout]    --> src/network.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut nabla_w = Network::set_weights(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nabla_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/network.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn backprop(&mut self, x: Vec<f64>, y: Vec<f64>) {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/network.rs:118:41
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn backprop(&mut self, x: Vec<f64>, y: Vec<f64>) {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `num_layers` and `sizes` are never read
[INFO] [stdout]   --> src/network.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Network {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 12 |     num_layers: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     sizes: Vec<i32>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Network` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `sgd`, `update_mini_batch`, and `backprop` are never used
[INFO] [stdout]    --> src/network.rs:95:12
[INFO] [stdout]     |
[INFO] [stdout]  18 | impl Network {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  95 |     pub fn sgd(&mut self, mut training_data: Vec<(Vec<f64>, Vec<f64>)>, epochs: i32, mini_batch_size: usize, eta: f64) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn update_mini_batch(&mut self, mini_batch: &[(Vec<f64>,Vec<f64>)], eta: f64) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     fn backprop(&mut self, x: Vec<f64>, y: Vec<f64>) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `dot_product` found for struct `Network` in the current scope
[INFO] [stdout]   --> src/main.rs:28:38
[INFO] [stdout]    |
[INFO] [stdout] 28 |         assert_eq!(network::Network::dot_product(vec![1.0, 2.0], vec![2.0, 3.0]), 8.0);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ function or associated item not found in `Network`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/network.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Network {
[INFO] [stdout]    | ------------------ function or associated item `dot_product` not found for this struct
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `Network`, consider using `Network::new` which returns `Network`
[INFO] [stdout]   --> src/network.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(sizes: Vec<i32>) -> Network {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `dot_product` found for struct `Network` in the current scope
[INFO] [stdout]   --> src/main.rs:29:38
[INFO] [stdout]    |
[INFO] [stdout] 29 |         assert_eq!(network::Network::dot_product(vec![5.0, 3.0], vec![-1.0, 3.0]), 4.0);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ function or associated item not found in `Network`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/network.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Network {
[INFO] [stdout]    | ------------------ function or associated item `dot_product` not found for this struct
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `Network`, consider using `Network::new` which returns `Network`
[INFO] [stdout]   --> src/network.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(sizes: Vec<i32>) -> Network {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `dot_product` found for struct `Network` in the current scope
[INFO] [stdout]   --> src/main.rs:30:38
[INFO] [stdout]    |
[INFO] [stdout] 30 |         assert_eq!(network::Network::dot_product(vec![5.0, 3.0, 2.0, 1.0], vec![-1.0, 3.0, 4.0]), 12.0);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ function or associated item not found in `Network`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/network.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Network {
[INFO] [stdout]    | ------------------ function or associated item `dot_product` not found for this struct
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `Network`, consider using `Network::new` which returns `Network`
[INFO] [stdout]   --> src/network.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(sizes: Vec<i32>) -> Network {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/network.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut my_net = Network {
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_layers`
[INFO] [stdout]   --> src/network.rs:51:38
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn set_weights(sizes: &Vec<i32>, num_layers: usize, random: bool) -> Vec<Vec<Vec<f64>>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_layers`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/network.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let n = training_data.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/network.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |         for j in 0..epochs {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut nabla_b = Network::set_biases(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut nabla_w = Network::set_weights(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mini_batch`
[INFO] [stdout]    --> src/network.rs:106:37
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn update_mini_batch(&mut self, mini_batch: &[(Vec<f64>,Vec<f64>)], eta: f64) {
[INFO] [stdout]     |                                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mini_batch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eta`
[INFO] [stdout]    --> src/network.rs:106:73
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn update_mini_batch(&mut self, mini_batch: &[(Vec<f64>,Vec<f64>)], eta: f64) {
[INFO] [stdout]     |                                                                         ^^^ help: if this is intentional, prefix it with an underscore: `_eta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nabla_b`
[INFO] [stdout]    --> src/network.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut nabla_b = Network::set_biases(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nabla_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nabla_w`
[INFO] [stdout]    --> src/network.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut nabla_w = Network::set_weights(&self.sizes, self.num_layers, false);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nabla_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/network.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn backprop(&mut self, x: Vec<f64>, y: Vec<f64>) {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/network.rs:118:41
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn backprop(&mut self, x: Vec<f64>, y: Vec<f64>) {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sigmoid` (bin "sigmoid" test) due to 3 previous errors; 16 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b0e7f3feba90f00457900b400994fcbe06c316da6139622fcc40fee21bdc4603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e7f3feba90f00457900b400994fcbe06c316da6139622fcc40fee21bdc4603", kill_on_drop: false }`
[INFO] [stdout] b0e7f3feba90f00457900b400994fcbe06c316da6139622fcc40fee21bdc4603
