> it prevents me from doing things that I know are correct because it thinks my code will run in a multithreaded environment Could you elaborate on that? In yo

> it prevents me from doing things that I know are correct because it thinks my code will run in a multithreaded environment Could you elaborate on that? In your case you don't need to worry about Send/Sync, you can use Cell/RefCell, etc. The borrow checker isn't about threading, it's useful in a purely single-threaded context too.