Apples and oranges. Go doesn't care about release or dev builds. Nothing about it applies here. Rust needs specific toolchain improvements to cache partial com

Apples and oranges. Go doesn't care about release or dev builds. Nothing about it applies here. Rust needs specific toolchain improvements to cache partial compilations for reuse. sccache can cache some results, but it's not a comprehensive solution. What specific proposal would replace serde? I'd like to know.