[dist1ll]

> it's now actually very fast at compiling small incremental changes in debug mode.

This breaks down quickly at scale. If you reach significant code complexity, even with dedicated build machines, remote Bazel builds & distributed caching you're going to wait a long time for single-line changes in a debug `cargo check`. There are some patterns that play well with incremental compilation, but they're easy to break in practice.

I predict as more devs are moving from writing Rust as a hobby (or with focus on smaller libraries) towards larger production systems, we'll see an uptick of frustration with build times. But I'm happy that Rust leadership is aware of the issue (e.g. it was listed as one of the main points in the most recent survey, which made me immensely happy).