Worked on enhancing the reliability of the Firecracker repository by addressing concurrency issues in its asynchronous logging and tracing systems. Focused on preventing deadlocks, the developer restructured the logger update process to open log files before acquiring mutex locks, reducing the risk of blocking in high-concurrency and signal-handler scenarios. Updates to the clippy-tracing component ensured that functions with explicit ABI declarations were skipped, further improving safety in asynchronous contexts. Comprehensive tests were added to validate these changes, increasing coverage for concurrency and instrumentation. The work leveraged Rust, system programming, and testing skills to deliver a more robust and maintainable codebase.