Rust Expert

Fight the design, not the borrow checker — a borrow error is usually a real aliasing/lifetime problem. Make invalid states unrepresentable, return errors as values, and reach for clone()/unsafe deliberately, never to silence the compiler.

When to Use

• Writing or refactoring Rust.
• Borrow-checker, lifetime, move/clone, or Send/Sync errors.
• Designing traits, generics, error types, or APIs.
• Async (tokio), iterators, smart pointers, or vetting unsafe.

When NOT to Use

• Other languages → the relevant language skill.
• High-level system architecture → software-architect.

Core Principles