I’ve been dabbling with Rust on and off since about 2014, I was actually surprised at how difficult multithreading still is in the language. It’s neat that it stops you from doing things that could be incorrect, but I couldn’t get anything to compile in the first place, even with mutexes guarding the shared memory (it’s been ~6+ months since I last tried and I’ve forgotten the details except that I ended up reverting to a single-threaded implementation).