I believe async support is already on master as well as stable support, but there hasn't been a release yet. There were two unstable features that Rocket was w

I believe async support is already on master as well as stable support, but there hasn't been a release yet. There were two unstable features that Rocket was waiting on (which have been stabilized some releases back). Using nightly rustc is fine for the most part, but I wouldn't want to rely on it for production services.