Worked on the pantsbuild/pants repository to enhance the reliability and maintainability of the sandboxer and worker components. Addressed a critical issue by redirecting the sandboxer daemon’s stdin and stdout to /dev/null, preventing resource leaks and hangs in non-TTY environments. Improved process lifecycle management by ensuring all communication occurs through a Unix domain socket and routing logs to stderr using env_logger. This Rust-based system programming effort aligned the sandboxer’s I/O handling with existing process runner patterns, resulting in more stable CI, pre-commit, and IDE integrations. The work reduced debugging time and improved stability for long-running and piped invocations.