Per this post, the core team has been overtly hostile to something as simple as maintaining an accurate, publicly-available list of Rust teams and working groups (which would include acknowledging alumni who are not actively contributing to the project). That's toxic behavior which is actively impeding people who might want to work on Rust. There's more to toxicity than "standard issue misogyny, racist comments" and the like.
And it's also wrong: There's a list of rust alumni on the website and afaik, every person that has served on a team can be added there: https://www.rust-lang.org/governance/teams/alumni
The author of the post complaining about not maintaining a list of alumni is listed on that page.
Re:The [Rust] Core Team Is Toxic
by XAMPPRocky on Saturday December 11, 2021 @05:46AM
(#29519970)
That list is there because I fought and pushed for that change to be there against the core team.
What I see here is evidence of a team that simply isn't experienced with running a serious organization and/or has personal issues around communication skills and personal organizational skills. That's not "toxic" but it is a serious scaling issue. In companies this usually necessitates bringing in someone in a senior executive role who is good at these things and empowering them to take over some of those functions.
Toxic to me implies actual covert or overt hostility.