clippy

Run clippy on project

$ cargo clippy

$ cargo clippy --fix

$ cargo clippy --all-targets

$ cargo clippy -- -D warnings

$ cargo clippy -- -A clippy::[lint_name]

$ cargo clippy --list

$ cargo clippy --release

cargo clippy [options] [-- clippyoptions_]

clippy is a collection of lints to catch common mistakes and improve Rust code. It provides hundreds of lints covering correctness, style, performance, complexity, and more.
Clippy integrates with Cargo and analyzes code during compilation, providing actionable warnings. Lints range from simple style suggestions to detecting subtle bugs and performance issues. Many lints include automatic fixes that can be applied with `--fix`.

--fix

Automatically apply lint suggestions.

Check all targets including tests and examples.

Check with all features enabled.

Check in release mode.

List all available lints.

Deny specific lint (treat as error).

Warn on specific lint.

Allow (ignore) specific lint.

Forbid lint (cannot be overridden).

clippy::correctness: Likely bugs
clippy::suspicious: Questionable code
clippy::style: Style improvements
clippy::complexity: Overly complex code
clippy::perf: Performance improvements
clippy::pedantic: Stricter lints
clippy::nursery: Experimental lints

Some lints may have false positives. Pedantic lints can be noisy. Automatic fixes should be reviewed. May conflict with rustfmt on some suggestions.

clippy was created by Manish Goregaokar and others starting in 2014 as a third-party tool. The name references Microsoft's Office assistant. It became an official Rust component in 2018, distributed via rustup. Clippy has grown to include over 600 lints and is widely used in the Rust ecosystem.

cargo(1), rustc(1), rustfmt(1), rustup(1)