[INFO] cloning repository https://github.com/john-h-k/digit-nn-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/john-h-k/digit-nn-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohn-h-k%2Fdigit-nn-rs", kill_on_drop: false }`
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[INFO] [stdout] 9b4d2dc1f6970ecbd5b4075e9fc8dd2316c37c77
[INFO] testing john-h-k/digit-nn-rs against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohn-h-k%2Fdigit-nn-rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/john-h-k/digit-nn-rs
[INFO] finished tweaking git repo https://github.com/john-h-k/digit-nn-rs
[INFO] tweaked toml for git repo https://github.com/john-h-k/digit-nn-rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/john-h-k/digit-nn-rs on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/john-h-k/digit-nn-rs 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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c538a53dd8ec04cc820cbd65b1087172813319e06078a2569a3ad6401ab2041
[INFO] running `Command { std: "docker" "start" "-a" "1c538a53dd8ec04cc820cbd65b1087172813319e06078a2569a3ad6401ab2041", kill_on_drop: false }`
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[INFO] [stdout] 1c538a53dd8ec04cc820cbd65b1087172813319e06078a2569a3ad6401ab2041
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b322c290955a5d7d1616445c94529b6d9cc7176210d2e266ece6a8a644e98830
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[INFO] [stderr]    Compiling flume v0.11.0
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[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]    Compiling serde v1.0.215
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[INFO] [stderr]    Compiling ndarray-npy v0.9.1
[INFO] [stderr]    Compiling digit-nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Ix1` and `Ix2`
[INFO] [stdout]  --> src/mnist.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array1, Array2, Axis, Ix1, Ix2};
[INFO] [stdout]   |                                     ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/mnist.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fs::File, io::Read}; // needed for the trait
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/network.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     iter::{self, zip},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RngCore`
[INFO] [stdout]  --> src/network.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{seq::SliceRandom, RngCore};
[INFO] [stdout]   |                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Array1`, `ArrayD`, and `Axis`
[INFO] [stdout]   --> src/network.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |                            ^^^^^^          ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linalg::Dot`
[INFO] [stdout]   --> src/network.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImageView`
[INFO] [stdout]  --> src/main.rs:1:49
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{imageops::FilterType, DynamicImage, GenericImageView, ImageBuffer, Luma};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/network.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let n = training_data.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/network.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |             let count = mini_batches.len();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/network.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |             for (i, mini_batch) in mini_batches.enumerate() {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `validation_data`
[INFO] [stdout]   --> src/main.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let (training_data, validation_data, test_data) = mnist::load_data_wrapper();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sizes` is never read
[INFO] [stdout]   --> src/network.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 35 |     num_layers: usize,
[INFO] [stdout] 36 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `load` is never used
[INFO] [stdout]    --> src/network.rs:255:12
[INFO] [stdout]     |
[INFO] [stdout]  43 | impl Network {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn load(path: &str, sizes: Vec<usize>) -> std::io::Result<Self> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.05s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "b322c290955a5d7d1616445c94529b6d9cc7176210d2e266ece6a8a644e98830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b322c290955a5d7d1616445c94529b6d9cc7176210d2e266ece6a8a644e98830", kill_on_drop: false }`
[INFO] [stdout] b322c290955a5d7d1616445c94529b6d9cc7176210d2e266ece6a8a644e98830
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab03aa2df0fbc062e538c6a80cef205efdefc21c72234bfb1963c7dc3eb581a6
[INFO] running `Command { std: "docker" "start" "-a" "ab03aa2df0fbc062e538c6a80cef205efdefc21c72234bfb1963c7dc3eb581a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling digit-nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Ix1` and `Ix2`
[INFO] [stdout]  --> src/mnist.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array1, Array2, Axis, Ix1, Ix2};
[INFO] [stdout]   |                                     ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/mnist.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fs::File, io::Read}; // needed for the trait
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/network.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     iter::{self, zip},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RngCore`
[INFO] [stdout]  --> src/network.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{seq::SliceRandom, RngCore};
[INFO] [stdout]   |                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Array1`, `ArrayD`, and `Axis`
[INFO] [stdout]   --> src/network.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |                            ^^^^^^          ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linalg::Dot`
[INFO] [stdout]   --> src/network.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImageView`
[INFO] [stdout]  --> src/main.rs:1:49
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{imageops::FilterType, DynamicImage, GenericImageView, ImageBuffer, Luma};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/network.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let n = training_data.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/network.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |             let count = mini_batches.len();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/network.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |             for (i, mini_batch) in mini_batches.enumerate() {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `validation_data`
[INFO] [stdout]   --> src/main.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let (training_data, validation_data, test_data) = mnist::load_data_wrapper();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sizes` is never read
[INFO] [stdout]   --> src/network.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Network {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 35 |     num_layers: usize,
[INFO] [stdout] 36 |     sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `load` is never used
[INFO] [stdout]    --> src/network.rs:255:12
[INFO] [stdout]     |
[INFO] [stdout]  43 | impl Network {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub fn load(path: &str, sizes: Vec<usize>) -> std::io::Result<Self> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "ab03aa2df0fbc062e538c6a80cef205efdefc21c72234bfb1963c7dc3eb581a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab03aa2df0fbc062e538c6a80cef205efdefc21c72234bfb1963c7dc3eb581a6", kill_on_drop: false }`
[INFO] [stdout] ab03aa2df0fbc062e538c6a80cef205efdefc21c72234bfb1963c7dc3eb581a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec65a662e290b9ed100f4defdea57399104fb2db19721403d0488e8f7a7deaeb
[INFO] running `Command { std: "docker" "start" "-a" "ec65a662e290b9ed100f4defdea57399104fb2db19721403d0488e8f7a7deaeb", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Ix1` and `Ix2`
[INFO] [stderr]  --> src/mnist.rs:1:37
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ndarray::{Array1, Array2, Axis, Ix1, Ix2};
[INFO] [stderr]   |                                     ^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `io::Read`
[INFO] [stderr]  --> src/mnist.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::{fs::File, io::Read}; // needed for the trait
[INFO] [stderr]   |                     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/network.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |     iter::{self, zip},
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RngCore`
[INFO] [stderr]  --> src/network.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rand::{seq::SliceRandom, RngCore};
[INFO] [stderr]   |                              ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Array1`, `ArrayD`, and `Axis`
[INFO] [stderr]   --> src/network.rs:10:28
[INFO] [stderr]    |
[INFO] [stderr] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stderr]    |                            ^^^^^^          ^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `linalg::Dot`
[INFO] [stderr]   --> src/network.rs:10:15
[INFO] [stderr]    |
[INFO] [stderr] 10 | use ndarray::{linalg::Dot, Array1, Array2, ArrayD, Axis};
[INFO] [stderr]    |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GenericImageView`
[INFO] [stderr]  --> src/main.rs:1:49
[INFO] [stderr]   |
[INFO] [stderr] 1 | use image::{imageops::FilterType, DynamicImage, GenericImageView, ImageBuffer, Luma};
[INFO] [stderr]   |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/network.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let n = training_data.len();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/network.rs:92:17
[INFO] [stderr]    |
[INFO] [stderr] 92 |             let count = mini_batches.len();
[INFO] [stderr]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/network.rs:94:18
[INFO] [stderr]    |
[INFO] [stderr] 94 |             for (i, mini_batch) in mini_batches.enumerate() {
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `validation_data`
[INFO] [stderr]   --> src/main.rs:51:25
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let (training_data, validation_data, test_data) = mnist::load_data_wrapper();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation_data`
[INFO] [stderr] 
[INFO] [stderr] warning: field `sizes` is never read
[INFO] [stderr]   --> src/network.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct Network {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 35 |     num_layers: usize,
[INFO] [stderr] 36 |     sizes: Vec<usize>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `load` is never used
[INFO] [stderr]    --> src/network.rs:255:12
[INFO] [stderr]     |
[INFO] [stderr]  43 | impl Network {
[INFO] [stderr]     | ------------ associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 255 |     pub fn load(path: &str, sizes: Vec<usize>) -> std::io::Result<Self> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `digit-nn` (bin "digit-nn" test) generated 13 warnings (run `cargo fix --bin "digit-nn" -p digit-nn --tests` to apply 9 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/digit_nn-1eff62938e092dfa)
[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" "ec65a662e290b9ed100f4defdea57399104fb2db19721403d0488e8f7a7deaeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec65a662e290b9ed100f4defdea57399104fb2db19721403d0488e8f7a7deaeb", kill_on_drop: false }`
[INFO] [stdout] ec65a662e290b9ed100f4defdea57399104fb2db19721403d0488e8f7a7deaeb
