Worked on the vectordotdev/tokio repository to improve test reliability and maintainability by consolidating tracing instrumentation tests into the main integration test suite. This refactor eliminated the need for a separate test crate and streamlined the test setup by aligning with recent changes in the tracing-mock API. The update relied on the published tracing-mock dependency, reducing overhead and simplifying future modifications. Using Rust and YAML, the developer focused on CI/CD and testing best practices, accelerating feedback cycles in continuous integration and ensuring compatibility with upstream dependencies. The work addressed issue #7007 and was delivered as a dedicated refactor commit.