I think your not looking at this correctly. Swift also had a very fast pasted release cycle like Go. Rust took a different path, the developers until the 1.0 r

I think your not looking at this correctly. Swift also had a very fast pasted release cycle like Go. Rust took a different path, the developers until the 1.0 release basically said; use at your own risk, we reserve the right to change anything and everything and break it all. This freed them of trying to keep the language backward compatible. After the 1.0 release, there have been nearly no breaking changes introduced to the language, and they have signaled that they want to keep this stability going into the future. This is a big difference from Go which decided to go for an earlier public release, and now is much more constrained on how it can change (if they don't want to break all the stuff built on it out there). So it's not fair to include the 6-7 year development cycle, as that could be more thought of as a research period, one that laid the groundwork for the safety in everything which is the basis for Rust now.