>If rustc is the only Rust compiler in existence, it effectively defines what Rust is. You can have 2 different version of the same compiler that makes 2 diffe

>If rustc is the only Rust compiler in existence, it effectively defines what Rust is. You can have 2 different version of the same compiler that makes 2 different things for the same code, or you can have a bugged compiler that on Thursday produces different output, I assume you notice now the problem with not having a standard and the documentation is "go read the compiler source code from tonight commit, yesterday code migtht not be fresh enough"