Cargo Nextest

The cargo-nextest skill enables AI agents to run Rust tests using the high-performance nextest harness. It allows agents to execute test suites, filter specific tests by name or path, and generate detailed reports directly within the terminal environment.

When to use it

• Running full regression suites for a Rust project before deploying changes.
• Isolating and executing individual failing tests identified in a build log.
• Generating verbose output to debug complex test failures without manual CLI invocation.
• Validating library updates by running specific unit tests related to modified modules.

Key capabilities

• Executes the cargo nextest command interface via AI agent tools.
• Supports filtering tests using patterns, paths, or tags.
• Produces structured test results and timing information.
• Integrates with existing Rust project structures for immediate execution.

Example prompts

• "Run all tests in the src/lib.rs module and report any failures."
• "Execute the nextest harness on my current Rust project and summarize the pass/fail status."
• "Filter and run only the tests tagged with 'integration' to check for regressions."

Tips & gotchas

Ensure your Rust environment has cargo-nextest installed globally before invoking the skill, as it relies on the underlying binary. The skill is specific to Rust projects; attempting to use it on non-Rust codebases will result in execution errors.