A while ago someone asked me a C++ question and I said "sorry, never worked seriously with C++". Then I remembered that I wrote the client code for a private instant messenger in Borland C++ approximately 20 years ago, that was used by thousands of people.
Exactly. Every time I look at Rust, it looks foreign and unfamiliar, until I remember that I wrote Rust for a client for maybe a year straight many years ago. Then it starts to come back to me.
So yeah, it happens.