What is the difference between cargo-machete and cargo-udeps?

cargo-machete is significantly faster and works on the stable Rust toolchain, whereas cargo-udeps is more accurate but requires the nightly toolchain and takes longer to analyze the code.

How do I prevent cargo-machete from flagging a dependency I know I need?

You can use a .cargo-machete.toml configuration file to ignore specific dependencies, or add an inline comment like '# machete:ignore' directly in your Cargo.toml file.

Can cargo-machete automatically remove unused dependencies?

Yes, by using the --fix flag, the tool can automatically update your Cargo.toml file to remove any dependencies identified as unused.

Why should I integrate cargo-machete into my GitHub Actions?

Integrating it into your CI ensures your dependency list stays lean, which prevents dependency rot, speeds up builds for all contributors, and reduces the attack surface of your project.

Does this skill work with large Rust workspaces?

Yes, it fully supports workspaces. You can run the check across all members using the --workspace flag or target specific packages individually.

Cargo Machete (Rust Dependency Auditor)

Name: Cargo Machete (Rust Dependency Auditor)
Author: laurigates

bylaurigates

•

開発者ツール

Identifies and removes unused Rust dependencies to streamline Cargo.toml files and accelerate build times.

概要

cargo-machete is a high-performance Rust development utility designed to audit project dependencies by scanning source code for crates declared in Cargo.toml but never utilized. It provides a faster, stable-compatible alternative to cargo-udeps, offering a seamless way to reduce project bloat and minimize binary sizes. The skill is particularly valuable during refactoring or CI/CD integration, as it includes an automated fix feature to instantly prune unnecessary crates while supporting complex workspace configurations and ignore patterns for false positives like proc-macros.

主な機能

High-speed detection of unused crates in Rust projects
Works on stable Rust without requiring nightly toolchains
Automated Cargo.toml cleanup using the --fix command
Full support for Rust workspaces and multi-crate projects
Configurable ignore rules for false positives and re-exports
3 GitHub stars

ユースケース

Auditing legacy Rust codebases to remove technical debt and unused library bloat
Maintaining workspace hygiene by ensuring sub-crates only declare required dependencies
Optimizing CI/CD pipeline speeds by reducing dependency download and compile times

概要

主な機能

High-speed detection of unused crates in Rust projects
Works on stable Rust without requiring nightly toolchains
Automated Cargo.toml cleanup using the --fix command
Full support for Rust workspaces and multi-crate projects
Configurable ignore rules for false positives and re-exports
3 GitHub stars

ユースケース

Auditing legacy Rust codebases to remove technical debt and unused library bloat
Maintaining workspace hygiene by ensuring sub-crates only declare required dependencies
Optimizing CI/CD pipeline speeds by reducing dependency download and compile times