[INFO] cloning repository https://github.com/moq4/nn-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/moq4/nn-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoq4%2Fnn-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoq4%2Fnn-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6feef79f98fa260fde970fd70726761a132445a
[INFO] testing moq4/nn-from-scratch against beta-2025-09-21 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoq4%2Fnn-from-scratch" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/moq4/nn-from-scratch
[INFO] finished tweaking git repo https://github.com/moq4/nn-from-scratch
[INFO] tweaked toml for git repo https://github.com/moq4/nn-from-scratch written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/moq4/nn-from-scratch on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/moq4/nn-from-scratch 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47b9d8dec6318aab435ae0139b134cb6b4f5062b5b145de1598654b6365c9e0f
[INFO] running `Command { std: "docker" "start" "-a" "47b9d8dec6318aab435ae0139b134cb6b4f5062b5b145de1598654b6365c9e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47b9d8dec6318aab435ae0139b134cb6b4f5062b5b145de1598654b6365c9e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47b9d8dec6318aab435ae0139b134cb6b4f5062b5b145de1598654b6365c9e0f", kill_on_drop: false }`
[INFO] [stdout] 47b9d8dec6318aab435ae0139b134cb6b4f5062b5b145de1598654b6365c9e0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5212a5597dede3ce863671af42c428d4060fd501ad4be1cbca2b93c641e6920
[INFO] running `Command { std: "docker" "start" "-a" "b5212a5597dede3ce863671af42c428d4060fd501ad4be1cbca2b93c641e6920", kill_on_drop: false }`
[INFO] [stderr]    Compiling nn-from-scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let mut m_forward_pass = Matrix::new(2, 1);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bias` is never read
[INFO] [stdout]  --> src/nn/layer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Layer {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 6 |     weights: Matrix,
[INFO] [stdout] 7 |     bias: Matrix,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "b5212a5597dede3ce863671af42c428d4060fd501ad4be1cbca2b93c641e6920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5212a5597dede3ce863671af42c428d4060fd501ad4be1cbca2b93c641e6920", kill_on_drop: false }`
[INFO] [stdout] b5212a5597dede3ce863671af42c428d4060fd501ad4be1cbca2b93c641e6920
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfa87a0ba9d570ab1bea170253c3e5d4c3e51a2221e9339537fb267108ab4812
[INFO] running `Command { std: "docker" "start" "-a" "dfa87a0ba9d570ab1bea170253c3e5d4c3e51a2221e9339537fb267108ab4812", kill_on_drop: false }`
[INFO] [stderr]    Compiling nn-from-scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let mut m_forward_pass = Matrix::new(2, 1);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bias` is never read
[INFO] [stdout]  --> src/nn/layer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Layer {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 6 |     weights: Matrix,
[INFO] [stdout] 7 |     bias: Matrix,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "dfa87a0ba9d570ab1bea170253c3e5d4c3e51a2221e9339537fb267108ab4812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa87a0ba9d570ab1bea170253c3e5d4c3e51a2221e9339537fb267108ab4812", kill_on_drop: false }`
[INFO] [stdout] dfa87a0ba9d570ab1bea170253c3e5d4c3e51a2221e9339537fb267108ab4812
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 382fd77402ca0fb629cb22d3fac8a60d1ea8f7ed5163f0b317a3984ffe1b59b6
[INFO] running `Command { std: "docker" "start" "-a" "382fd77402ca0fb629cb22d3fac8a60d1ea8f7ed5163f0b317a3984ffe1b59b6", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut m_forward_pass = Matrix::new(2, 1);
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |         |
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: field `bias` is never read
[INFO] [stderr]  --> src/nn/layer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Layer {
[INFO] [stderr]   |            ----- field in this struct
[INFO] [stderr] 6 |     weights: Matrix,
[INFO] [stderr] 7 |     bias: Matrix,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `nn-from-scratch` (bin "nn-from-scratch" test) generated 2 warnings (run `cargo fix --bin "nn-from-scratch" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/nn_from_scratch-925c08205d1e221e)
[INFO] running `Command { std: "docker" "inspect" "382fd77402ca0fb629cb22d3fac8a60d1ea8f7ed5163f0b317a3984ffe1b59b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "382fd77402ca0fb629cb22d3fac8a60d1ea8f7ed5163f0b317a3984ffe1b59b6", kill_on_drop: false }`
[INFO] [stdout] 382fd77402ca0fb629cb22d3fac8a60d1ea8f7ed5163f0b317a3984ffe1b59b6