I guess I misunderstood what you are getting at. In my mind, hiring someone who has never used X language but can, in general, solve problems and program so we'll hire them and they'll learn X language was what I thought you were talking about.
Do you consider Rust to be the problem solver's kryptonite? If not, it is not clear why a problem solver cannot solve the problem of solving problems in Rust.
I don't think this is a question with a yes/no answer? If you apply for a role that involves writing Rust and can't demonstrate the ability to solve problems in Rust, you won't make it far. But we don't even collect resumes, so you get to make that call for yourself; we don't divine it from signs and sigils.