149 Byte Hello World, and How You Can Make Your Rust Project Smaller

I’ve been size coding some Rust, trying to make the smallest possible “Hello World!” program. After a few days of tinkering, I’ve managed to squeeze it down and make a mere 149 Byte Hello World!, (probably) the smallest 64bit one out there in Rust. I got bored of just printing so I also made a 540 byte brainfuck interpreter. [...]