During July 2025, Eddy worked on the rust-lang/rust repository, focusing on improving the reliability of cross-architecture testing. He addressed inconsistencies in error reporting by normalizing error outputs to a fixed format, specifically targeting discrepancies on big-endian systems. Using Rust and system programming skills, Eddy implemented a solution that ensures uninitialized memory errors are reported consistently across different architectures. This change reduced flaky tests and improved the determinism of constant evaluation tests, directly enhancing the stability of multi-architecture continuous integration pipelines. His work contributed to more reliable CI processes and streamlined debugging, reflecting a deep understanding of testing and platform differences.