I may be late to the game, but I just read the Rust 1.51 release notes and noticed a new Cargo option that can help improve macOS compilation times. After upgrading and enabling the option, my incremental dev rebuilds went from ~14s to ~4s! Speeding up builds with split-debuginfo In the 1.51 release notes, there's a section about configuring how debug info is produced. It appears that by default o