Rust Rules

Version: Rust 1.92+

Tooling

• Linting: clippy (800+ lints)
• Formatting: rustfmt
• Testing: cargo test with coverage
• Package management: cargo

Clippy Configuration

# clippy.toml or Cargo.toml
[lints.clippy]
pedantic = "warn"
nursery = "warn"
# restriction lints: enable case-by-case only

CI Integration

# Recommended CI command - fail on warnings
cargo clippy --all-targets --all-features -- -D warnings

Best Practices (2026)

• Make code Clippy-warning free before commit
• Use thiserror for library errors, anyhow for applications
• Use tokio as the async runtime
• Use Result<T, E> for all fallible operations
• Minimize unsafe blocks - document when necessary

Lint Categories

• correctness: Common programming errors (always fix)
• perf: Performance issues (review carefully)
• style: Readability and consistency
• complexity: Overly complex code
• pedantic: More nuanced suggestions

Error Handling Pattern

#[derive(Debug, thiserror::Error)]
pub enum AppError {
    #[error("Database error: {0}")]
    Database(#[from] sqlx::Error),
    #[error("Not found: {0}")]
    NotFound(String),
}

MoAI Integration

• Use Skill("moai-lang-rust") for detailed patterns
• Follow TRUST 5 quality gates