During January 2025, Titechnatume enhanced the traP-jp/traO-Judge-judge repository by addressing resource management concerns in Rust. They implemented automatic cleanup for temporary files by defining the Drop trait for the ReadonlyFile type, ensuring files are removed when they go out of scope. This approach leveraged Rust’s ownership and RAII patterns to prevent resource leaks and improve the reliability of file handling in judge workflows. Robust error handling was added to the cleanup process, allowing for graceful failure and better observability. Titechnatume’s work focused on file management and resource lifecycle, contributing to safer, more maintainable Rust code.