Running Clippy

Run cargo clippy to catch common Rust mistakes, style issues, and potential bugs.

1. Check Cargo.toml for the current MuJoCo version (look for +mj-X.Y.Z in the package version). Then find the matching mujoco-X.Y.Z/ directory at the repository root.

2. Run clippy (replace X.Y.Z with the version found in step 1):

export MUJOCO_DYNAMIC_LINK_DIR=$(realpath mujoco-X.Y.Z/lib) && export LD_LIBRARY_PATH=$(realpath mujoco-X.Y.Z/lib/) && cargo clippy --all-targets --features renderer -- -D warnings 2>&1

3. Verify the exit code is 0 (success). Fix any warnings before considering the work done.

[!NOTE]

• --all-targets checks lib, tests, examples, and benches.
• -D warnings treats all warnings as errors so nothing is silently ignored.
• --features renderer enables the renderer feature; adjust if working on viewer code (e.g. --features "renderer viewer-ui").
• Do NOT fix integer truncation casts (e.g. usize as i32) when the C API validates or clamps the value (see coding-conventions.md).
• Do NOT suppress clippy lints with #[allow(...)] without a justifying comment.
• To check a single file: cargo clippy --lib --features renderer -- -D warnings.
• To auto-fix simple lints: cargo clippy --fix --allow-dirty --features renderer.