I don't have concerns regarding it changing very fast―it's often good for a novel library in a language (and an actors library for Rust qualifies as that) to iterate on the public APIs and experiment a bit to make the library better. I was just saying that to explain my grievances with the docs. Good experience for users is usually either a very well documented library which may then change quickly, or a not-that-well-documented library that has a stable interface so third-party info on how to use it does not get out of date quickly. Both of those together can create trouble. It did for me―Actix was so far the former, which is not ideal, but the latter would also be a pity if said stabilization happened because of abandonment, not out of convergence on a 1.0-worthy API.