[INFO] cloning repository https://github.com/maxjeffos/rust-neural-network-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxjeffos/rust-neural-network-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxjeffos%2Frust-neural-network-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxjeffos%2Frust-neural-network-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4c2539f42a371031368d45b92d7a75516ec12f0
[INFO] checking maxjeffos/rust-neural-network-experiments against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxjeffos%2Frust-neural-network-experiments" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/maxjeffos/rust-neural-network-experiments
[INFO] finished tweaking git repo https://github.com/maxjeffos/rust-neural-network-experiments
[INFO] tweaked toml for git repo https://github.com/maxjeffos/rust-neural-network-experiments written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/maxjeffos/rust-neural-network-experiments on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/maxjeffos/rust-neural-network-experiments 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a02914d3e759175988f99a74fedddca60ed79bdb1a59f6bd1b133c6119fc113
[INFO] running `Command { std: "docker" "start" "-a" "3a02914d3e759175988f99a74fedddca60ed79bdb1a59f6bd1b133c6119fc113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a02914d3e759175988f99a74fedddca60ed79bdb1a59f6bd1b133c6119fc113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a02914d3e759175988f99a74fedddca60ed79bdb1a59f6bd1b133c6119fc113", kill_on_drop: false }`
[INFO] [stdout] 3a02914d3e759175988f99a74fedddca60ed79bdb1a59f6bd1b133c6119fc113
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d866734a80b7c17c11ac2a2783fbf2c353747de67c0353adbd7eb923e76a1920
[INFO] running `Command { std: "docker" "start" "-a" "d866734a80b7c17c11ac2a2783fbf2c353747de67c0353adbd7eb923e76a1920", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]     Checking mnist v0.5.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking time-test v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking autodiff v0.4.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking test1-autodiff v0.1.0 (/opt/rustwide/workdir/test1-autodiff)
[INFO] [stdout] warning: function `e_to_the_x` is never used
[INFO] [stdout]  --> test1-autodiff/src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn e_to_the_x(x: FT<f64>) -> FT<f64> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `e_to_the_x` is never used
[INFO] [stdout]  --> test1-autodiff/src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn e_to_the_x(x: FT<f64>) -> FT<f64> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking rand_distr v0.4.2
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stdout] warning: enum `Quadrant` is never used
[INFO] [stdout]  --> common/src/point.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Quadrant {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `softmax` is never used
[INFO] [stdout]  --> common/src/softmax.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn softmax(logits: &[f64]) -> Vec<f64> {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `softmax_derivative` is never used
[INFO] [stdout]   --> common/src/softmax.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn softmax_derivative(logits: &[f64]) -> Vec<Vec<f64>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> common/src/linalg/mod.rs:714:64
[INFO] [stdout]     |
[INFO] [stdout] 714 |     pub fn iter_with<'a>(&'a self, other: &'a ColumnVector) -> IterWith {
[INFO] [stdout]     |                           --               --                  ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                           |                |
[INFO] [stdout]     |                           |                the lifetime is named here
[INFO] [stdout]     |                           the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 714 |     pub fn iter_with<'a>(&'a self, other: &'a ColumnVector) -> IterWith<'a> {
[INFO] [stdout]     |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking test4-multivariable-regression v0.1.0 (/opt/rustwide/workdir/test4-multivariable-regression)
[INFO] [stderr]     Checking test3-simple-linear-regression v0.1.0 (/opt/rustwide/workdir/test3-simple-linear-regression)
[INFO] [stderr]     Checking test5-playing-with-matrix-ideas v0.1.0 (/opt/rustwide/workdir/test5-playing-with-matrix-ideas)
[INFO] [stdout] warning: enum `MultivariableRegressionError` is never used
[INFO] [stdout]   --> test4-multivariable-regression/src/main.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | enum MultivariableRegressionError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `InvalidDataError` is never used
[INFO] [stdout]   --> test4-multivariable-regression/src/main.rs:43:6
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum InvalidDataError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `predict` is never used
[INFO] [stdout]   --> test4-multivariable-regression/src/main.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn predict(theta: &[f64], independant: &[f64]) -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MultivariableRegressionError` is never used
[INFO] [stdout]   --> test4-multivariable-regression/src/main.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | enum MultivariableRegressionError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `InvalidDataError` is never used
[INFO] [stdout]   --> test4-multivariable-regression/src/main.rs:43:6
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum InvalidDataError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Quadrant` is never used
[INFO] [stdout]  --> common/src/point.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Quadrant {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> common/src/linalg/mod.rs:714:64
[INFO] [stdout]     |
[INFO] [stdout] 714 |     pub fn iter_with<'a>(&'a self, other: &'a ColumnVector) -> IterWith {
[INFO] [stdout]     |                           --               --                  ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                           |                |
[INFO] [stdout]     |                           |                the lifetime is named here
[INFO] [stdout]     |                           the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 714 |     pub fn iter_with<'a>(&'a self, other: &'a ColumnVector) -> IterWith<'a> {
[INFO] [stdout]     |                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mnist-data v0.1.0 (/opt/rustwide/workdir/mnist-data)
[INFO] [stderr]     Checking test2-mlp-classifier v0.1.0 (/opt/rustwide/workdir/test2-mlp-classifier)
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     blue,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `orange` should have an upper camel case name
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     orange,
[INFO] [stdout]    |     ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Orange`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     blue,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray`
[INFO] [stdout]  --> test2-mlp-classifier/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ndarray::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `orange` should have an upper camel case name
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     orange,
[INFO] [stdout]    |     ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Orange`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     for i in 0..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultilayerPerceptron` is never constructed
[INFO] [stdout]  --> test2-mlp-classifier/src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MultilayerPerceptron {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MLPArchitecture` is never constructed
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct MLPArchitecture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl MLPArchitecture {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 21 |     fn new(input_size: usize, hidden_layers: Vec<usize>, output_size: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray`
[INFO] [stdout]  --> test2-mlp-classifier/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ndarray::*;
[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 variable: `i`
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     for i in 0..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultilayerPerceptron` is never constructed
[INFO] [stdout]  --> test2-mlp-classifier/src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MultilayerPerceptron {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MLPArchitecture` is never constructed
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct MLPArchitecture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> test2-mlp-classifier/src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl MLPArchitecture {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 21 |     fn new(input_size: usize, hidden_layers: Vec<usize>, output_size: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking metrics v0.1.0 (/opt/rustwide/workdir/metrics)
[INFO] [stdout] error: struct `Counter` is never constructed
[INFO] [stdout]  --> metrics/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Counter {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metrics` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Counter` is never constructed
[INFO] [stdout]  --> metrics/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Counter {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metrics` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d866734a80b7c17c11ac2a2783fbf2c353747de67c0353adbd7eb923e76a1920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d866734a80b7c17c11ac2a2783fbf2c353747de67c0353adbd7eb923e76a1920", kill_on_drop: false }`
[INFO] [stdout] d866734a80b7c17c11ac2a2783fbf2c353747de67c0353adbd7eb923e76a1920
