[INFO] cloning repository https://github.com/AnonymousBit0111/simple-nn-mnist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnonymousBit0111/simple-nn-mnist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnonymousBit0111%2Fsimple-nn-mnist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnonymousBit0111%2Fsimple-nn-mnist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a66aaebf8746e3e1e877bf156c792333f30df6f
[INFO] checking AnonymousBit0111/simple-nn-mnist against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnonymousBit0111%2Fsimple-nn-mnist" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AnonymousBit0111/simple-nn-mnist
[INFO] finished tweaking git repo https://github.com/AnonymousBit0111/simple-nn-mnist
[INFO] tweaked toml for git repo https://github.com/AnonymousBit0111/simple-nn-mnist written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AnonymousBit0111/simple-nn-mnist on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AnonymousBit0111/simple-nn-mnist 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b90a0c4cb54079e82c0da03169d3f1581bb6c1d68c5a83e7018651a1104d2f12
[INFO] running `Command { std: "docker" "start" "-a" "b90a0c4cb54079e82c0da03169d3f1581bb6c1d68c5a83e7018651a1104d2f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b90a0c4cb54079e82c0da03169d3f1581bb6c1d68c5a83e7018651a1104d2f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b90a0c4cb54079e82c0da03169d3f1581bb6c1d68c5a83e7018651a1104d2f12", kill_on_drop: false }`
[INFO] [stdout] b90a0c4cb54079e82c0da03169d3f1581bb6c1d68c5a83e7018651a1104d2f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2001e8c65c2061df45f57f9f81aee0f640ab7d5c455b2b23ed0e2766a34831b
[INFO] running `Command { std: "docker" "start" "-a" "a2001e8c65c2061df45f57f9f81aee0f640ab7d5c455b2b23ed0e2766a34831b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]     Checking getrandom v0.3.3
[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 v0.9.1
[INFO] [stderr]     Checking simple_nn_mnist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]    --> src/main.rs:179:44
[INFO] [stdout]     |
[INFO] [stdout] 179 | ...                   .map(|(w_row, &δj)| w_row[i] * δj)
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the usage includes 'δ' (U+03B4)
[INFO] [stdout]     = note: please recheck to make sure their usages are indeed what you want
[INFO] [stdout]     = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]    --> src/main.rs:179:44
[INFO] [stdout]     |
[INFO] [stdout] 179 | ...                   .map(|(w_row, &δj)| w_row[i] * δj)
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the usage includes 'δ' (U+03B4)
[INFO] [stdout]     = note: please recheck to make sure their usages are indeed what you want
[INFO] [stdout]     = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]    --> src/main.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut file = match File::open(&path) {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:257:25
[INFO] [stdout]     |
[INFO] [stdout] 257 |                     Err(e) => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut file = match File::open(&path) {
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `train` is never used
[INFO] [stdout]    --> src/main.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 71  | impl NeuralNetwork {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn train(&mut self, datapoints: &[DataPoint], learning_rate: f64) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]    --> src/main.rs:204:4
[INFO] [stdout]     |
[INFO] [stdout] 204 | fn f(x: f64) -> f64 {
[INFO] [stdout]     |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Layers` should have a snake case name
[INFO] [stdout]    --> src/main.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |             let Layers = self.layers.len();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case: `layers`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dC_da` should have a snake case name
[INFO] [stdout]    --> src/main.rs:162:25
[INFO] [stdout]     |
[INFO] [stdout] 162 |                     let dC_da = Self::neuron_cost_derivative(a, y);
[INFO] [stdout]     |                         ^^^^^ help: convert the identifier to snake case: `d_c_da`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]    --> src/main.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut file = match File::open(&path) {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:257:25
[INFO] [stdout]     |
[INFO] [stdout] 257 |                     Err(e) => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut file = match File::open(&path) {
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `train` is never used
[INFO] [stdout]    --> src/main.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 71  | impl NeuralNetwork {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn train(&mut self, datapoints: &[DataPoint], learning_rate: f64) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]    --> src/main.rs:204:4
[INFO] [stdout]     |
[INFO] [stdout] 204 | fn f(x: f64) -> f64 {
[INFO] [stdout]     |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Layers` should have a snake case name
[INFO] [stdout]    --> src/main.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |             let Layers = self.layers.len();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case: `layers`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dC_da` should have a snake case name
[INFO] [stdout]    --> src/main.rs:162:25
[INFO] [stdout]     |
[INFO] [stdout] 162 |                     let dC_da = Self::neuron_cost_derivative(a, y);
[INFO] [stdout]     |                         ^^^^^ help: convert the identifier to snake case: `d_c_da`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.45s
[INFO] running `Command { std: "docker" "inspect" "a2001e8c65c2061df45f57f9f81aee0f640ab7d5c455b2b23ed0e2766a34831b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2001e8c65c2061df45f57f9f81aee0f640ab7d5c455b2b23ed0e2766a34831b", kill_on_drop: false }`
[INFO] [stdout] a2001e8c65c2061df45f57f9f81aee0f640ab7d5c455b2b23ed0e2766a34831b
