[INFO] cloning repository https://github.com/semanticss/neural_net
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/semanticss/neural_net" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemanticss%2Fneural_net", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemanticss%2Fneural_net'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 169a172fc6e0e67e679bc093e41044226ac9bf60
[INFO] checking semanticss/neural_net against master#c290daa1e5274a52e54a0f49e31bd70192abc606 for pr-133502-23
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemanticss%2Fneural_net" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/semanticss/neural_net
[INFO] finished tweaking git repo https://github.com/semanticss/neural_net
[INFO] tweaked toml for git repo https://github.com/semanticss/neural_net written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/semanticss/neural_net on toolchain c290daa1e5274a52e54a0f49e31bd70192abc606
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/semanticss/neural_net 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" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mnist v0.6.0
[INFO] [stderr]   Downloaded libc v0.2.179
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016
[INFO] running `Command { std: "docker" "start" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016" "/opt/rustwide/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016" "/opt/rustwide/cargo-home/bin/cargo" "+c290daa1e5274a52e54a0f49e31bd70192abc606" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.179
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]     Checking mnist v0.6.0
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking neural_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `sign` is assigned to, but never used
[INFO] [stdout]    --> src/lin_alg/matrix.rs:176:13
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let mut sign = 1.0;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_sign` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sign` is never read
[INFO] [stdout]    --> src/lin_alg/matrix.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 sign *= -1.;
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rows`
[INFO] [stdout]    --> src/lin_alg/matrix.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let rows = self.rows;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `column`
[INFO] [stdout]    --> src/lin_alg/matrix.rs:243:30
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn get_column(&self, column: usize) -> Vec<f64> {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_column`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.66s
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/lin_alg/matrix.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout]  60 | impl Matrix {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn new_random(rows: usize, columns: usize) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     pub fn determinant_by_guassian_elimination(&mut self) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 170 |     pub fn forward_guassian_elimination(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 212 |     pub fn swap_columns(&mut self, col_a: usize, col_b: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     pub fn swap_rows(&mut self, row_a: usize, row_b: usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 239 |     pub fn get_row(&self, row: usize) -> &[f64] {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub fn get_column(&self, column: usize) -> Vec<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: variants `ReLU`, `Tanh`, and `Softplus` are never constructed
[INFO] [stdout]  --> src/net/activations.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum ActivationType {
[INFO] [stdout]   |          -------------- variants in this enum
[INFO] [stdout] 2 |     Sigmoid,
[INFO] [stdout] 3 |     ReLU,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     Tanh,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Softplus,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `layers` is never read
[INFO] [stdout]  --> src/net/nn.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct NeuralNet {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     layers: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sign` is assigned to, but never used
[INFO] [stdout]    --> src/lin_alg/matrix.rs:176:13
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let mut sign = 1.0;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_sign` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sign` is never read
[INFO] [stdout]    --> src/lin_alg/matrix.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 sign *= -1.;
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rows`
[INFO] [stdout]    --> src/lin_alg/matrix.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let rows = self.rows;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `column`
[INFO] [stdout]    --> src/lin_alg/matrix.rs:243:30
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn get_column(&self, column: usize) -> Vec<f64> {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_column`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `weighted_sum`
[INFO] [stdout]    --> src/lin_alg/matrix.rs:350:13
[INFO] [stdout]     |
[INFO] [stdout] 350 |         let weighted_sum = inputs
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weighted_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m3`
[INFO] [stdout]    --> src/lin_alg/matrix.rs:469:13
[INFO] [stdout]     |
[INFO] [stdout] 469 |         let m3: Matrix = m1.multiply_matrices(&m2).unwrap();
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_m3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `swap_columns` is never used
[INFO] [stdout]    --> src/lin_alg/matrix.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout]  60 | impl Matrix {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 212 |     pub fn swap_columns(&mut self, col_a: usize, col_b: 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: variants `ReLU`, `Tanh`, and `Softplus` are never constructed
[INFO] [stdout]  --> src/net/activations.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum ActivationType {
[INFO] [stdout]   |          -------------- variants in this enum
[INFO] [stdout] 2 |     Sigmoid,
[INFO] [stdout] 3 |     ReLU,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     Tanh,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Softplus,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `layers` is never read
[INFO] [stdout]  --> src/net/nn.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct NeuralNet {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     layers: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016", kill_on_drop: false }`
[INFO] [stdout] 3612f21daabcb8ee70997636d642c4ec486a3a56c67d4341cba8f7191afdf016
