I've been using Rust for just a little bit, building applications/services/scrapers/databases/forking libraries, but I haven't noticed these issues--the biggest compile time issue I had was including RocksDB. I'm trying to imagine what you're building. :} 99% of the time I'm just doing incremental debug builds, and haven't really minded the compile times when doing release builds. Overall it everything has been fast, to the point where I want to start scripting with Rust.