I think the other comment is conflating a previous kerfuffle, not the most recent one (the older event was about a criticism of Actix's previously prolific use

I think the other comment is conflating a previous kerfuffle, not the most recent one (the older event was about a criticism of Actix's previously prolific use of unsafe rather than a specific bug). From my recollection of the most recent brouhaha: Someone found a bug in some unsafe code and created a Github issue about it. The maintainer requested a PoC to show that the issue wasn't theoretical. A PoC was provided. Maintainer agreed it was a bug, but wanted a different solution than the provided pull-request. The maintainer was then harassed by a handful of Reddit/Twitter for various reasons. Maintainer nuked the GH issue. The internet-harassment escalated, so the maintainer deleted the repo. The outcome is that a few days later the maintainer re-released the repo but assigned a new maintainer and is no longer publicly involved in the project.