I've been involved with Software Development for over 20 years started with VB6 and some perl/python in 1998. I saw the "informal code of conduct" and it never worked. What really happened: many people were treating terribly and most of it was swept under the rug. CoC were created for valid and good reasons. I'm not defending the Rust community here, it seems childish to me. The past is not what you are trying to claim it was in this post. Look up the MANY Rails conference sexual harassment issues and worse.
We should not whitewash the past because the present isn't what we want.
We should not whitewash the past because the present isn't what we want.