> nothing would compile without the nightly toolchain. This problem is solved though. Almost all nightly users shifted to stable after async-await was stabiliz

> nothing would compile without the nightly toolchain. This problem is solved though. Almost all nightly users shifted to stable after async-await was stabilized. The last holdout (IIRC) was Rocket, which also compiles on stable now. I can't think of any popular libraries or frameworks that require nightly. I can't think of any popular feature that people would want to use nightly for. I think you could learn Rust now, write your code and then not worry about any new features that are added, ever. Your code will work without breaking. Keep upgrading the compiler every 6 weeks and your code still won't break. That's a guarantee.