cargo-fix

Automatically fix compiler warnings in Rust code

TLDR

Fix all warnings

$ cargo fix

Fix all targets

$ cargo fix --all-targets

Fix with all features enabled

$ cargo fix --all-features

Migrate to new edition

$ cargo fix --edition

Fix even with compiler errors

$ cargo fix --broken-code

Allow dirty working directory

$ cargo fix --allow-dirty

Allow uncommitted changes

$ cargo fix --allow-staged

SYNOPSIS

cargo fix [options]

DESCRIPTION

cargo fix automatically applies rustc's suggested fixes to source code. Runs cargo check internally and applies machine-applicable suggestions from diagnostics.

PARAMETERS

--edition

Apply fixes for edition migration

--edition-idioms

Apply edition-specific idiom changes

--broken-code

Fix code even with existing compiler errors

--allow-dirty

Allow fixes on dirty working directory

--allow-staged

Allow fixes with staged changes

--all-targets

Fix all targets (lib, bins, tests, benches, examples)

--all-features

Enable all features

--features features

Enable specified features

--lib

Fix library only

--bins

Fix all binaries

--tests

Fix all tests

-p, --package spec

Fix specific packages

--workspace

Fix all workspace members

EDITION MIGRATION

$ cargo fix --edition

Migrates code from one Rust edition to the next (e.g., 2018 to 2021).

CAVEATS

Can only fix normally compiled code. Conditionally compiled code requires appropriate --features or --target flags. Built into Cargo since Rust 1.29.