Nelli Skogman focused on enhancing the reliability of compiler feedback in the rust-lang/rust-clippy repository by addressing architecture-dependent error messaging. Working primarily in Rust, Nelli improved the accuracy of error messages related to isize and usize types, ensuring that developers receive correct information about type sizes across different architectures. Additionally, Nelli refined error handling for integer-to-floating-point casts, clarifying that precision loss may vary depending on the target platform. This work, rooted in compiler development and error handling, did not introduce new features but contributed depth by reducing developer confusion and support overhead, ultimately improving the developer experience for Rust users.