[INFO] updating cached repository kasper0406/neuralnetwork
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kasper0406/neuralnetwork
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kasper0406/neuralnetwork" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/kasper0406/neuralnetwork"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/kasper0406/neuralnetwork'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kasper0406/neuralnetwork" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/kasper0406/neuralnetwork"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/kasper0406/neuralnetwork'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 84178aaebc271283afe2387872159e53694a27a6
[INFO] sha for GitHub repo kasper0406/neuralnetwork: 84178aaebc271283afe2387872159e53694a27a6
[INFO] validating manifest of kasper0406/neuralnetwork on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kasper0406/neuralnetwork on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kasper0406/neuralnetwork
[INFO] finished frobbing kasper0406/neuralnetwork
[INFO] frobbed toml for kasper0406/neuralnetwork written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/kasper0406/neuralnetwork/Cargo.toml
[INFO] started frobbing kasper0406/neuralnetwork
[INFO] finished frobbing kasper0406/neuralnetwork
[INFO] frobbed toml for kasper0406/neuralnetwork written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/kasper0406/neuralnetwork/Cargo.toml
[INFO] crate kasper0406/neuralnetwork already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kasper0406/neuralnetwork against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-1/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/kasper0406/neuralnetwork:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 58ca03f8876edaf2b902a717e7ee03cd4499c0f54ea2b9d1bef61cd18729c0ba
[INFO] running `"docker" "start" "-a" "58ca03f8876edaf2b902a717e7ee03cd4499c0f54ea2b9d1bef61cd18729c0ba"`
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.6.0
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking futures-core-preview v0.2.3
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
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[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking futures-sink-preview v0.2.2
[INFO] [stderr]     Checking futures-util-preview v0.2.2
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking futures-executor-preview v0.2.2
[INFO] [stderr]     Checking futures-stable-preview v0.2.3
[INFO] [stderr]     Checking futures-async-runtime-preview v0.2.3
[INFO] [stderr]     Checking futures-preview v0.2.2
[INFO] [stderr]     Checking digits v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Distribution`, `Normal`
[INFO] [stderr]   --> src/main.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 | use rand::distributions::{Normal, Distribution};
[INFO] [stderr]    |                           ^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::ptr;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `activationfunction::ActivationFunction`
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use activationfunction::ActivationFunction;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AddAssign`, `Add`, `Index`, `Mul`
[INFO] [stderr]  --> src/neuralnetwork.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ops::{Add, AddAssign, Mul, Index};
[INFO] [stderr]   |                ^^^  ^^^^^^^^^  ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::Zero`
[INFO] [stderr]  --> src/neuralnetwork.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use num::Zero;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread_rng`
[INFO] [stderr]  --> src/neuralnetwork.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Uniform`
[INFO] [stderr]  --> src/neuralnetwork.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::distributions::{Uniform, Normal, Distribution};
[INFO] [stderr]   |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rev`
[INFO] [stderr]   --> src/neuralnetwork.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::iter::{Iterator, Rev};
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::MutexGuard`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | use std::sync::MutexGuard;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Add`, `Sub`
[INFO] [stderr]  --> src/ksuccession.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Index, IndexMut, Add, Sub};
[INFO] [stderr]   |                                 ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `KSuccession`
[INFO] [stderr]   --> src/main.rs:48:20
[INFO] [stderr]    |
[INFO] [stderr] 48 | use ksuccession::{ KSuccession, Color };
[INFO] [stderr]    |                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LayerDescription`
[INFO] [stderr]  --> src/ksuccessiontrainer.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use neuralnetwork::{ NeuralNetwork, LayerDescription };
[INFO] [stderr]   |                                     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Agent`
[INFO] [stderr]   --> src/main.rs:51:47
[INFO] [stderr]    |
[INFO] [stderr] 51 | use ksuccessiontrainer::{ KSuccessionTrainer, Agent, TrainableAgent, HumanAgent, NeuralNetworkAgent, GameTrace, GameDescription };
[INFO] [stderr]    |                                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `test::Bencher`
[INFO] [stderr]   --> src/main.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 | use test::Bencher;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 if (read_bytes == 0) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 if (category.1 == 4) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Distribution`, `Normal`
[INFO] [stderr]   --> src/main.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 | use rand::distributions::{Normal, Distribution};
[INFO] [stderr]    |                           ^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::ptr;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `activationfunction::ActivationFunction`
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use activationfunction::ActivationFunction;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AddAssign`, `Add`, `Index`, `Mul`
[INFO] [stderr]  --> src/neuralnetwork.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ops::{Add, AddAssign, Mul, Index};
[INFO] [stderr]   |                ^^^  ^^^^^^^^^  ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::Zero`
[INFO] [stderr]  --> src/neuralnetwork.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use num::Zero;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread_rng`
[INFO] [stderr]  --> src/neuralnetwork.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Uniform`
[INFO] [stderr]  --> src/neuralnetwork.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::distributions::{Uniform, Normal, Distribution};
[INFO] [stderr]   |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rev`
[INFO] [stderr]   --> src/neuralnetwork.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::iter::{Iterator, Rev};
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::MutexGuard`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | use std::sync::MutexGuard;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Add`, `Sub`
[INFO] [stderr]  --> src/ksuccession.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Index, IndexMut, Add, Sub};
[INFO] [stderr]   |                                 ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LayerDescription`
[INFO] [stderr]  --> src/ksuccessiontrainer.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use neuralnetwork::{ NeuralNetwork, LayerDescription };
[INFO] [stderr]   |                                     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Agent`
[INFO] [stderr]   --> src/main.rs:51:47
[INFO] [stderr]    |
[INFO] [stderr] 51 | use ksuccessiontrainer::{ KSuccessionTrainer, Agent, TrainableAgent, HumanAgent, NeuralNetworkAgent, GameTrace, GameDescription };
[INFO] [stderr]    |                                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 if (read_bytes == 0) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 if (category.1 == 4) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/main.rs:401:5
[INFO] [stderr]     |
[INFO] [stderr] 401 |     return;
[INFO] [stderr]     |     ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:196:68
[INFO] [stderr]     |
[INFO] [stderr] 196 |             agents.push(UnsafeCell::new(Mutex::new(construct_agent(game_factory, &layers))));
[INFO] [stderr]     |                                                                    ^^^^^^^^^^^^ expected enum `ksuccessiontrainer::GameDescription`, found closure
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `ksuccessiontrainer::GameDescription`
[INFO] [stderr]                found type `[closure@src/main.rs:180:28: 180:56]`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/neuralnetwork.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Iterator`
[INFO] [stderr]  --> src/ksuccessiontrainer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::iter::Iterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:199:47
[INFO] [stderr]     |
[INFO] [stderr] 199 |         let trainer = KSuccessionTrainer::new(game_factory);
[INFO] [stderr]     |                                               ^^^^^^^^^^^^ expected enum `ksuccessiontrainer::GameDescription`, found closure
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `ksuccessiontrainer::GameDescription`
[INFO] [stderr]                found type `[closure@src/main.rs:180:28: 180:56]`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]   --> src/main.rs:92:50
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 label: Matrix::new(10, 1, &|row, col| if i == row { 1_f64 } else { 0_f64 }),
[INFO] [stderr]    |                                                  ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]   --> src/main.rs:93:56
[INFO] [stderr]    |
[INFO] [stderr] 93 |                 values: Matrix::new(16 * 16, 1, &|row, col| pixels[row])
[INFO] [stderr]    |                                                        ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `twoplayerscore`
[INFO] [stderr]    --> src/main.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let twoplayerscore = &TwoPlayerScore;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_twoplayerscore`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/main.rs:420:59
[INFO] [stderr]     |
[INFO] [stderr] 420 |                 values: Matrix::new(image_size, 1, &|row, col| raw_values[row]),
[INFO] [stderr]     |                                                           ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/main.rs:421:50
[INFO] [stderr]     |
[INFO] [stderr] 421 |                 label: Matrix::new(10, 1, &|row, col| raw_values[image_size + row])
[INFO] [stderr]     |                                                  ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/main.rs:504:59
[INFO] [stderr]     |
[INFO] [stderr] 504 |     let mut classification_matrix = Matrix::new(10, 10, &|row, col| 0);
[INFO] [stderr]     |                                                           ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/main.rs:504:64
[INFO] [stderr]     |
[INFO] [stderr] 504 |     let mut classification_matrix = Matrix::new(10, 10, &|row, col| 0);
[INFO] [stderr]     |                                                                ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sigmoid`
[INFO] [stderr]    --> src/main.rs:403:9
[INFO] [stderr]     |
[INFO] [stderr] 403 |     let sigmoid = &Sigmoid;
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_sigmoid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `print_sample`
[INFO] [stderr]    --> src/main.rs:428:9
[INFO] [stderr]     |
[INFO] [stderr] 428 |     let print_sample = |sample: &Matrix<f64>| {
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_print_sample`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `relu`
[INFO] [stderr]    --> src/main.rs:438:9
[INFO] [stderr]     |
[INFO] [stderr] 438 |     let relu = &Relu;
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_relu`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/neuralnetwork.rs:58:83
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 weights: Matrix::new(layer.num_neurons, prev_layer_neurons + 1, &|row, col| {
[INFO] [stderr]    |                                                                                   ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]   --> src/neuralnetwork.rs:58:88
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 weights: Matrix::new(layer.num_neurons, prev_layer_neurons + 1, &|row, col| {
[INFO] [stderr]    |                                                                                        ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/neuralnetwork.rs:126:70
[INFO] [stderr]     |
[INFO] [stderr] 126 |             None => Matrix::new(weights.rows(), weights.columns(), &|row, col| 0_f64),
[INFO] [stderr]     |                                                                      ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/neuralnetwork.rs:126:75
[INFO] [stderr]     |
[INFO] [stderr] 126 |             None => Matrix::new(weights.rows(), weights.columns(), &|row, col| 0_f64),
[INFO] [stderr]     |                                                                           ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lambda`
[INFO] [stderr]    --> src/neuralnetwork.rs:127:46
[INFO] [stderr]     |
[INFO] [stderr] 127 |             Some(Regulizer::WeightPeanalizer(lambda)) => Matrix::new(weights.rows(), weights.columns(), &|row, col| {
[INFO] [stderr]     |                                              ^^^^^^ help: consider prefixing with an underscore: `_lambda`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/neuralnetwork.rs:159:86
[INFO] [stderr]     |
[INFO] [stderr] 159 |                 ms.push(Matrix::new(layer.weights.rows(), layer.weights.columns(), &|row, col| 0_f64));
[INFO] [stderr]     |                                                                                      ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/neuralnetwork.rs:159:91
[INFO] [stderr]     |
[INFO] [stderr] 159 |                 ms.push(Matrix::new(layer.weights.rows(), layer.weights.columns(), &|row, col| 0_f64));
[INFO] [stderr]     |                                                                                           ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]   --> src/ksuccessiontrainer.rs:97:76
[INFO] [stderr]    |
[INFO] [stderr] 97 |         return Matrix::new(game.get_rows() * game.get_columns(), 1, &|row, col| {
[INFO] [stderr]    |                                                                            ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/ksuccessiontrainer.rs:149:33
[INFO] [stderr]     |
[INFO] [stderr] 149 |             Matrix::new(1, 1, &|row, col| {
[INFO] [stderr]     |                                 ^^^ help: consider prefixing with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]    --> src/ksuccessiontrainer.rs:149:38
[INFO] [stderr]     |
[INFO] [stderr] 149 |             Matrix::new(1, 1, &|row, col| {
[INFO] [stderr]     |                                      ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/main.rs:401:5
[INFO] [stderr]     |
[INFO] [stderr] 401 |     return;
[INFO] [stderr]     |     ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_winner`
[INFO] [stderr]   --> src/ksuccession.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn get_winner(&self) -> Option<Color> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_action`
[INFO] [stderr]   --> src/ksuccessiontrainer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn get_action(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_actions`
[INFO] [stderr]   --> src/ksuccessiontrainer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn get_actions(&self) -> &Vec<Action> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |                     file.read(&mut tmp_buffer);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/neuralnetwork.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Iterator`
[INFO] [stderr]  --> src/ksuccessiontrainer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::iter::Iterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `digits`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "58ca03f8876edaf2b902a717e7ee03cd4499c0f54ea2b9d1bef61cd18729c0ba"`
[INFO] running `"docker" "rm" "-f" "58ca03f8876edaf2b902a717e7ee03cd4499c0f54ea2b9d1bef61cd18729c0ba"`
[INFO] [stdout] 58ca03f8876edaf2b902a717e7ee03cd4499c0f54ea2b9d1bef61cd18729c0ba