mozilla/sccacheNew scan
87/ 100 · B

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

Sccache is a ccache-like tool. It is used as a compiler wrapper and avoids compilation when possible. Sccache has the capability to utilize caching in remote storage environments, including various cloud storage options, or alternatively, in local storage.

Rust7,355 starsApache-2.0updated 2d ago
DocumentationREADME, setup, examples, license
93
EngineeringTests, CI, linting, lockfiles
80
Project healthDescription, activity, stars, deps
94

What to fix first

The highest-impact improvements for this repo.

  1. 1
    Install and run instructions
    DocumentationInfo

    Add a .env.example listing all required environment variables so contributors know what to set up.

  2. 2
    Reproducibility
    EngineeringInfo

    Add `edition = "2021"` to [package] in Cargo.toml for the latest Rust language features.

  3. 3
    Issue and PR templates
    EngineeringInfo

    Add .github/ISSUE_TEMPLATE/ with bug_report.md and feature_request.md to guide contributors. It dramatically improves issue quality.

Detailed breakdown

Documentation

93
  • 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 guide75
    • CONTRIBUTING guide or docs directory present.
    • Code of conduct present.

Engineering

80
  • Tests90
    • Test files detected (src/test).
    • Cargo.toml has dev-dependencies and test files are present.
  • CI/CD100

    Not applicable?

    • CI is configured (.github/workflows/ci.yml).
    • CI workflow runs tests.
    • CI runs on pull requests, not just on pushes to main.
    • CI workflow runs a lint or format check.
    • CI runs type checking (tsc, mypy, cargo check, etc.).
    • CI reports or uploads test coverage.
    • CI tests across multiple environments or versions.
    • CI includes a build step.
  • Linting and formatting60
    • CI runs cargo clippy for Rust linting.
    • CI does not run `cargo fmt --check` (−20 pts vs clippy + fmt).Add `cargo fmt --check` to CI to enforce consistent formatting.
  • Reproducibility100
    • Lockfile present (Cargo.lock). Installs are reproducible.
    • Environment pinned via tests/integration/docker-compose.yml.
    • Dependabot covers 2 ecosystems (cargo, github-actions). Dependencies stay current.
    • Cargo.toml does not specify edition 2021.Add `edition = "2021"` to [package] in Cargo.toml for the latest Rust language features.
  • Issue and PR templates0
    • No issue or PR templates found (−90 pts).Add .github/ISSUE_TEMPLATE/ with bug_report.md and feature_request.md to guide contributors. It dramatically improves issue quality.
    • Optional: add a SECURITY.md.A SECURITY.md explains how to responsibly disclose vulnerabilities. Worth adding once the project has real users.

Project health

94
  • Dependency manifest95
    • 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).
    • 7,355 stars.
  • Housekeeping100
    • .gitignore present.
Repository files19 root entries
  • .github
    Good: CI is configured (.github/workflows/ci.yml).
    Good: Dependabot covers 2 ecosystems (cargo, github-actions). Dependencies stay current.
  • benches
  • docs
    Good: CONTRIBUTING guide or docs directory present.
  • scripts
  • snap
  • src
    Good: Test files detected (src/test).
  • tests
    Good: Environment pinned via tests/integration/docker-compose.yml.
  • .envrc
  • .gitignore
    Good: .gitignore present.
  • .pre-commit-config.yaml
  • .rustfmt.toml
  • .taplo.toml
  • Cargo.lock
    Good: Lockfile present (Cargo.lock). Installs are reproducible.
  • Cargo.toml
    Good: Dependency manifest found (Cargo.toml).
  • CODE_OF_CONDUCT.md
    Good: Code of conduct present.
  • flake.lock
  • flake.nix
  • LICENSE
    Good: Licensed under Apache-2.0.
  • 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.