I avoid the Rust stdlib. The stdlib uses panics and dynamic memory allocation, neither of which are great for embedded usecases or writing software adhering to

I avoid the Rust stdlib. The stdlib uses panics and dynamic memory allocation, neither of which are great for embedded usecases or writing software adhering to safety-critical coding practices. no_std is common for embedded targets, and IIRC the linux kernel couldn't use stdlib because of panics.