Rust and Continuous Integration | RustMeUp

Rust and Continuous Integration


Rust is a system programming language that is safe from common bugs, concurrent and practical. It runs blazingly fast and prevents almost all crashes, due to its courage to innovate on syntax and semantics.

Continuous Integration (CI) is a coding philosophy and set of practices that drive development teams to implement small changes and check in code to version control systems frequently. Because most modern applications require developing code in different platforms and tools, the team needs a mechanism to integrate and validate its changes.

Rust and CI, when combined, can provide a rock-solid foundation for developing high-quality, reliable software. This guide will provide an in-depth look into how Rust programming is integrated in CI/CD environments, enhancing your coding practice.

Rust in Continuous Integration

Why Use Rust in CI?

Rust's safety features are a boon in a CI environment. It has no null, no segfaults, and guarantees memory safety without a garbage collector. This can materially reduce incorrect test results due to programming bugs and can speed up the testing and integration process.

How Does Rust Enhance CI Processes?

  1. Performance: Rust offers zero-cost abstractions, which means that it can provide a high level of abstraction without sacrificing speed or efficiency. This can help make CI processes more efficient and can reduce the resources required for testing and integration tasks.

  2. Concurrency: Rust’s memory management features make it a great language for concurrent programming. Concurrency in CI processes can significantly accelerate testing and deployments.

  3. Interoperability: Rust is designed to be interoperable with other languages. It can be easily integrated with existing software written in different programming languages which makes it ideal for a CI pipeline.

Examples of Rust in CI

Here are some examples of how Rust is used in continuous integration:

  1. Testing: Rust provides a built-in testing framework which can be automated in a CI pipeline for comprehensive and efficient testing.

  2. Linter Checks: Rust provides a linter, clippy, which can be included in the CI pipeline to automatically check for common mistakes and inconsistencies in the code.

  3. Documentation Checks: Rust's inbuilt documentation tool, Rustdoc, can be integrated into the CI pipeline to enforce high-quality, up-to-date documentation.

  4. Cross-Platform Builds: Rust supports cross-compilation, which means that it can be used to compile software for a wide range of platforms and architectures. This is highly beneficial in a CI environment that needs to build and test software for different platforms.

  5. Fuzzing: Rust supports fuzz testing, a technique that involves providing random data as input to a program in an attempt to uncover bugs. This can be incorporated into a CI pipeline to help verify the robustness of the program.

Enhancing CI/CD Practices with Rust

Integrating Rust into your CI/CD Pipeline

  1. Running Tests Automatically: The cargo test command can be used to compile your code and run all tests. It is possible to run this command from CI servers as part of the build process.

  2. Checking Documentation: Use cargo doc to generate documentation for the Rust code. If all public APIs are not documented, the command fails. It forces the developer to keep the documentation up-to-date.

  3. Cross-Compilation: Rust provides a tool called cross, which you can use to build your software for different platforms. This is much simpler than setting up multiple build servers or VMs to compile for different targets.

CI Tools that Support Rust

Several CI tools natively support Rust, including:

For more resources about using Rust in Continuous Integration, you can check out this comprehensive listing of related resources.

  1. Travis CI: A CI service that automatically builds and tests software projects hosted on GitHub. Travis CI can detect when a project is written in Rust and apply sensible test, build, and packaging steps.

  2. GitHub Actions: A CI/CD service provided by GitHub. It supports workflows for building, testing, and deploying projects written in any programming language, including Rust.

  3. GitLab CI: A continuous integration service included with GitLab that coordinates the testing and deployment of different pipeline stages.


By integrating Rust into your CI/CD pipeline, you can leverage Rust's powerful features to significantly enhance the efficiency, speed, and robustness of your CI processes. Regardless of whether you're building web applications, microservices, system utilities, or even game engines, Rust and CI can help you produce high-quality, reliable software.

Frequently Asked Questions about Rust and Continuous Integration

What is Continuous Integration?

Continuous Integration (CI) is a development practice where developers integrate code into a shared repository frequently to detect errors quickly and locate them more easily.

Why use Rust in Continuous Integration?

Using Rust in CI processes provides a range of advantages, including better memory safety, efficient performance, and enhanced concurrency. These features make Rust ideal for integrating and using in CI/CD environments.

What does Rust provide which can be utilized in CI/CD?

Rust provides features like built-in testing, cross-compilation support, and linter checks which can be utilized in CI/CD.

How can Rust be integrated in my CI/CD pipeline?

Rust can be integrated into a CI/CD pipeline using commands like cargo test for testing, cargo doc for documentation checks, and cross for cross-compilation.

Which CI tools support Rust?

Several CI tools like Travis CI, GitHub Actions, and GitLab CI natively support Rust, and can be used to automate building and testing of Rust projects.