Right, but the question was: > doesn’t Rust refuse to compile even when you use non-concurrency safe objects in a single thread? and given that most types (Ve

Right, but the question was: > doesn’t Rust refuse to compile even when you use non-concurrency safe objects in a single thread? and given that most types (Vec, HashMap, etc.) aren't "concurrency-safe" (thread-safe?), your answer > yes is rather perplexing.