[INFO] cloning repository https://github.com/xDimGG/nn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xDimGG/nn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxDimGG%2Fnn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxDimGG%2Fnn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94496c2d64b6ef9a8ab422f307f15026d1be0ddc
[INFO] testing xDimGG/nn-rust against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxDimGG%2Fnn-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xDimGG/nn-rust
[INFO] finished tweaking git repo https://github.com/xDimGG/nn-rust
[INFO] tweaked toml for git repo https://github.com/xDimGG/nn-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xDimGG/nn-rust on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xDimGG/nn-rust 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e01607919b4554a97384d84ef3f5cdc21c2ba6e3b34b0e613246a018bfc69584
[INFO] running `Command { std: "docker" "start" "-a" "e01607919b4554a97384d84ef3f5cdc21c2ba6e3b34b0e613246a018bfc69584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e01607919b4554a97384d84ef3f5cdc21c2ba6e3b34b0e613246a018bfc69584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e01607919b4554a97384d84ef3f5cdc21c2ba6e3b34b0e613246a018bfc69584", kill_on_drop: false }`
[INFO] [stdout] e01607919b4554a97384d84ef3f5cdc21c2ba6e3b34b0e613246a018bfc69584
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a9fe00e3d4992fcf7632db48b393cd558e73815ed1cfd6f90f0f8bbac6593b8
[INFO] running `Command { std: "docker" "start" "-a" "9a9fe00e3d4992fcf7632db48b393cd558e73815ed1cfd6f90f0f8bbac6593b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling mnist v0.5.0
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mnist::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mnist::*;
[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: `next_neuron`
[INFO] [stdout]    --> src/main.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |                 for (j, next_neuron) in next.neurons.iter().enumerate() {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_neuron`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Sigmoid`, `Linear`, and `Softmax` are never constructed
[INFO] [stdout]   --> src/main.rs:8:2
[INFO] [stdout]    |
[INFO] [stdout]  7 | enum Activation {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout]  8 |     Sigmoid,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]  9 |     ReLU,
[INFO] [stdout] 10 |     Linear,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     Softmax,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Activation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `learn` is never used
[INFO] [stdout]    --> src/main.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 137 | impl Network {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 188 |     fn learn(&mut self, data: &Vec<(Vec<f64>, Vec<f64>)>, epochs: usize, alpha: f64, beta: f64, batch_size: usize, log: bool) -> Re...
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_hot` is never used
[INFO] [stdout]    --> src/main.rs:364:4
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn one_hot(value: u8) -> Vec<f64> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]    --> src/main.rs:371:4
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn largest(arr: Vec<f64>) -> usize {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.06s
[INFO] running `Command { std: "docker" "inspect" "9a9fe00e3d4992fcf7632db48b393cd558e73815ed1cfd6f90f0f8bbac6593b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a9fe00e3d4992fcf7632db48b393cd558e73815ed1cfd6f90f0f8bbac6593b8", kill_on_drop: false }`
[INFO] [stdout] 9a9fe00e3d4992fcf7632db48b393cd558e73815ed1cfd6f90f0f8bbac6593b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3caa670563812b22c343202bfa0a5b02620c3c2df36cbab9bc3532c02fe50ec8
[INFO] running `Command { std: "docker" "start" "-a" "3caa670563812b22c343202bfa0a5b02620c3c2df36cbab9bc3532c02fe50ec8", kill_on_drop: false }`
[INFO] [stderr]    Compiling nn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mnist::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mnist::*;
[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: `next_neuron`
[INFO] [stdout]    --> src/main.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |                 for (j, next_neuron) in next.neurons.iter().enumerate() {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_neuron`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Sigmoid`, `Linear`, and `Softmax` are never constructed
[INFO] [stdout]   --> src/main.rs:8:2
[INFO] [stdout]    |
[INFO] [stdout]  7 | enum Activation {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout]  8 |     Sigmoid,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]  9 |     ReLU,
[INFO] [stdout] 10 |     Linear,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     Softmax,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Activation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `learn` is never used
[INFO] [stdout]    --> src/main.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 137 | impl Network {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 188 |     fn learn(&mut self, data: &Vec<(Vec<f64>, Vec<f64>)>, epochs: usize, alpha: f64, beta: f64, batch_size: usize, log: bool) -> Re...
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_hot` is never used
[INFO] [stdout]    --> src/main.rs:364:4
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn one_hot(value: u8) -> Vec<f64> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]    --> src/main.rs:371:4
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn largest(arr: Vec<f64>) -> usize {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "3caa670563812b22c343202bfa0a5b02620c3c2df36cbab9bc3532c02fe50ec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3caa670563812b22c343202bfa0a5b02620c3c2df36cbab9bc3532c02fe50ec8", kill_on_drop: false }`
[INFO] [stdout] 3caa670563812b22c343202bfa0a5b02620c3c2df36cbab9bc3532c02fe50ec8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7720a0af095953fa10af8542c3176e0fde02d683bcd9280c455519fa6d6fea11
[INFO] running `Command { std: "docker" "start" "-a" "7720a0af095953fa10af8542c3176e0fde02d683bcd9280c455519fa6d6fea11", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `mnist::*`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use mnist::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_neuron`
[INFO] [stderr]    --> src/main.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 |                 for (j, next_neuron) in next.neurons.iter().enumerate() {
[INFO] [stderr]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_neuron`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Sigmoid`, `Linear`, and `Softmax` are never constructed
[INFO] [stderr]   --> src/main.rs:8:2
[INFO] [stderr]    |
[INFO] [stderr]  7 | enum Activation {
[INFO] [stderr]    |      ---------- variants in this enum
[INFO] [stderr]  8 |     Sigmoid,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]  9 |     ReLU,
[INFO] [stderr] 10 |     Linear,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 11 |     Softmax,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Activation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `learn` is never used
[INFO] [stderr]    --> src/main.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 137 | impl Network {
[INFO] [stderr]     | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 188 |     fn learn(&mut self, data: &Vec<(Vec<f64>, Vec<f64>)>, epochs: usize, alpha: f64, beta: f64, batch_size: usize, log: bool) -> Re...
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `one_hot` is never used
[INFO] [stderr]    --> src/main.rs:364:4
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn one_hot(value: u8) -> Vec<f64> {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `largest` is never used
[INFO] [stderr]    --> src/main.rs:371:4
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn largest(arr: Vec<f64>) -> usize {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `nn` (bin "nn" test) generated 6 warnings (run `cargo fix --bin "nn" -p nn --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/nn-2b9124b2819d5dcc)
[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" "7720a0af095953fa10af8542c3176e0fde02d683bcd9280c455519fa6d6fea11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7720a0af095953fa10af8542c3176e0fde02d683bcd9280c455519fa6d6fea11", kill_on_drop: false }`
[INFO] [stdout] 7720a0af095953fa10af8542c3176e0fde02d683bcd9280c455519fa6d6fea11
