rust-lang/rustfmtNew scan
85/ 100 · B

A well-known project done right. Strong docs and solid engineering throughout.

Format Rust code

Rust6,872 starsApache-2.0updated 2d ago
DocumentationREADME, setup, examples, license
95
EngineeringTests, CI, linting, lockfiles
76
Project healthDescription, activity, stars, deps
93

What to fix first

The highest-impact improvements for this repo.

  1. 1
    CI/CD
    EngineeringWarning

    Add a step like `run: npm test`, `run: pytest`, or `run: tox` to your workflow file.

  2. 2
    CI/CD
    EngineeringInfo

    Add a lint step (e.g. `npm run lint`, `ruff check .`, `cargo clippy`) to catch style issues automatically.

  3. 3
    CI/CD
    EngineeringInfo

    Add `tsc --noEmit`, `mypy`, or `cargo check` to catch type errors before they merge.

Detailed breakdown

Documentation

95
  • README100
    • README is present.
    • README is well structured with multiple sections.
    • README includes screenshots or visuals. Great for first impressions.
    • README has code examples.
    • README links to a live demo or deployed app.
    • README includes status badges.
  • Install and run instructions90
    • README documents how to install the project.
    • README documents how to run the project.
    • If your project uses environment variables, add a .env.example listing them (+10 pts).Add a .env.example listing all required environment variables so contributors know what to set up.
  • License100
    • Licensed under Apache-2.0.
  • Contributing guide83
    • Contributing guide is detailed and thorough.
    • Contributing guide lacks a setup section (−12 pts).Show new contributors how to get a local dev environment running.
    • Contributing guide describes code style expectations.
    • Contributing guide explains how to run tests.
    • Contributing guide lacks a PR workflow section (−8 pts).Explain how to fork, branch, and open a pull request so contributors know what to expect.
    • Contributing guide includes code examples.
    • Code of conduct present.

Engineering

76
  • Tests90
    • Test files detected (check_diff/tests).
    • Cargo.toml has dev-dependencies and test files are present.
  • CI/CD57

    Not applicable?

    • CI is configured (.github/workflows/check_diff.yml).
    • The CI workflow does not appear to run any tests (−28 pts).Add a step like `run: npm test`, `run: pytest`, or `run: tox` to your workflow file.
    • CI runs on pull requests, not just on pushes to main.
    • CI does not appear to run a linter (−15 pts).Add a lint step (e.g. `npm run lint`, `ruff check .`, `cargo clippy`) to catch style issues automatically.
    • Optional: add type checking to CI.Add `tsc --noEmit`, `mypy`, or `cargo check` to catch type errors before they merge.
    • Optional: report test coverage in CI.Upload coverage to Codecov, Coveralls, or report it with `--coverage` flags.
    • CI tests across multiple environments or versions.
    • CI includes a build step.
  • Linting and formatting60
    • Linter or formatter configured (.editorconfig).
  • Reproducibility75
    • Lockfile present (Cargo.lock). Installs are reproducible.
    • No Dockerfile or runtime version pin found. Adding one earns +10 pts.Add a Dockerfile, .nvmrc, or .python-version to pin the runtime version and make the environment reproducible.
    • No Dependabot config (adding it earns up to +20 pts).Add .github/dependabot.yml with at least one package-ecosystem entry so dependencies are updated automatically.
    • Cargo.toml uses Rust edition 2021 (current best practice).
  • Issue and PR templates90
    • Issue or PR templates present.
    • Optional: add a SECURITY.md.A SECURITY.md explains how to responsibly disclose vulnerabilities. Worth adding once the project has real users.

Project health

93
  • Dependency manifest90
    • Dependency manifest found (Cargo.toml).
    • Cargo.toml includes a description for crates.io.
    • Cargo.toml declares a license.
    • Cargo.toml links to the source repository.
  • Repository metadata85
    • Repository has a description.
    • Primary language detected: Rust.
  • Activity100
    • Actively maintained (pushed within the last month).
    • 6,872 stars.
  • Housekeeping100
    • .gitignore present.
Repository files30 root entries
  • .github
    Good: CI is configured (.github/workflows/check_diff.yml).
    Good: Issue or PR templates present.
  • check_diff
    Good: Test files detected (check_diff/tests).
  • ci
  • config_proc_macro
  • docs
  • src
  • tests
  • .editorconfig
    Good: Linter or formatter configured (.editorconfig).
  • .gitattributes
  • .gitignore
    Good: .gitignore present.
  • atom.md
  • bootstrap.sh
  • build.rs
  • Cargo.lock
    Good: Lockfile present (Cargo.lock). Installs are reproducible.
  • Cargo.toml
    Good: Dependency manifest found (Cargo.toml).
  • CHANGELOG.md
    Good: Contributing guide is detailed and thorough.
    Info: Contributing guide lacks a setup section (−12 pts).Fix: Show new contributors how to get a local dev environment running.
    Good: Contributing guide describes code style expectations.
    Good: Contributing guide explains how to run tests.
    Info: Contributing guide lacks a PR workflow section (−8 pts).Fix: Explain how to fork, branch, and open a pull request so contributors know what to expect.
    Good: Contributing guide includes code examples.
  • CODE_OF_CONDUCT.md
    Good: Code of conduct present.
  • Configurations.md
  • Contributing.md
  • Design.md
  • intellij.md
  • LICENSE-APACHE
  • LICENSE-MIT
  • Makefile.toml
  • Processes.md
  • README.md
    Good: README is present.
    Good: README is well structured with multiple sections.
    Good: README includes screenshots or visuals. Great for first impressions.
    Good: README has code examples.
    Good: README links to a live demo or deployed app.
    Good: README includes status badges.
    Good: README documents how to install the project.
    Good: README documents how to run the project.
  • rust-toolchain
  • rustfmt.toml
  • Subtree sync procedure.md
  • triagebot.toml