Contributed to the rust-lang/rust repository by delivering two targeted feature improvements focused on documentation clarity and test observability. Addressed configuration documentation by correcting spelling errors in the bootstrap.example.toml file, enhancing clarity and reducing onboarding friction for new contributors. Improved the UI testing process by modifying test output to include runtime error messages, streamlining issue diagnosis during continuous integration. The work demonstrated proficiency in Rust, TOML, and error handling, with a strong emphasis on documentation standards and test instrumentation. These changes collectively improved the maintainability of the codebase and supported more efficient debugging and onboarding within the Rust development workflow.