Honestly I find not that much needs nightly anymore, but > which obviously changes frequently. Not nearly as much as you would think. Everything that doesn't

Honestly I find not that much needs nightly anymore, but > which obviously changes frequently. Not nearly as much as you would think. Everything that doesn't need a `#![feature(...)]` at the top of your crate never changes. Most `#![feature(...)]` flags enable things actually change pretty rarely - you can definitely go years on nightly without hitting a breaking change if you're conservative in your conservative in you feature set. > And I'm not sure if there was a "version" that ever worked on stable, as that information isn't immediately visible on crates.io. That would be a nice feature to have! But I bet that you would find that if a crate currently needs nightly, it needed nightly from basically the start.