Whats the state of Rust if I wanted to get into it for backend development? I've looked briefly into Rocket and liked it but didn't delve too deep, I understand Actix is one of the most mature?

I'm looking at warp[0] and like the concept behind it very much... a bit higher level than hyper, but using a concept of composable filters without being too opinionated. Haven't done much kicking of the tires yet though

[0] https://github.com/seanmonstar/warp