[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] checking moq4/nn-from-scratch against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoq4%2Fnn-from-scratch" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/moq4/nn-from-scratch on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-5-tc1/source/Cargo.toml
[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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f89fb367d637b3339e0b69ce2a9a8f1c687ca952e16ed672eb1cc88623b25aa0
[INFO] running `Command { std: "docker" "start" "-a" "f89fb367d637b3339e0b69ce2a9a8f1c687ca952e16ed672eb1cc88623b25aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f89fb367d637b3339e0b69ce2a9a8f1c687ca952e16ed672eb1cc88623b25aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f89fb367d637b3339e0b69ce2a9a8f1c687ca952e16ed672eb1cc88623b25aa0", kill_on_drop: false }`
[INFO] [stdout] f89fb367d637b3339e0b69ce2a9a8f1c687ca952e16ed672eb1cc88623b25aa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29837da5cf69e723c1a1e8f444ebd3b2ba8f56da39d4da671fbb2d2fca7a8b70
[INFO] running `Command { std: "docker" "start" "-a" "29837da5cf69e723c1a1e8f444ebd3b2ba8f56da39d4da671fbb2d2fca7a8b70", kill_on_drop: false }`
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` 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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "29837da5cf69e723c1a1e8f444ebd3b2ba8f56da39d4da671fbb2d2fca7a8b70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29837da5cf69e723c1a1e8f444ebd3b2ba8f56da39d4da671fbb2d2fca7a8b70", kill_on_drop: false }`
[INFO] [stdout] 29837da5cf69e723c1a1e8f444ebd3b2ba8f56da39d4da671fbb2d2fca7a8b70