For some insight into what more can be done, see - https://internals.rust-lang.org/t/slow-incremental-compilation-when-changing-small-things-or-comments/22007

For some insight into what more can be done, see - https://internals.rust-lang.org/t/slow-incremental-compilation-when-changing-small-things-or-comments/22007 https://internals.rust-lang.org/t/slow-incremental-compilati... - https://internals.rust-lang.org/t/feedback-request-performance-improvements-from-reducing-debug-info/21825?u=epage https://internals.rust-lang.org/t/feedback-request-performan... (there is more context to that being published today in a blog post) There are several more ideas that are in even earlier stages of discussion.