cargo-llvm-cov - Code Coverage with LLVM

cargo-llvm-cov provides accurate code coverage for Rust using LLVM's instrumentation-based coverage. It supports multiple output formats and integrates seamlessly with CI platforms.

When to Use This Skill

Use this skill when...	Use sibling skill instead when...
Measuring line / branch coverage with LLVM instrumentation	Just running tests fast in parallel -- use `cargo-nextest`
Generating HTML / lcov / codecov reports	Auditing unused dependencies -- use `cargo-machete`
Enforcing coverage thresholds in CI	Configuring lint rules -- use `clippy-advanced`
Wiring codecov.io or coveralls upload	Writing the tests themselves -- use `rust-development`

Installation

# Install cargo-llvm-cov
cargo install cargo-llvm-cov