>> Folks who are considering using actix-web might want to follow this thread about its heavy use of unsafe Rust.

It's one thing to make heavy use of a small bit of unsafe Rust. It's another to use unsafe heavily - like someone who just refuses to use the language properly and therefore just keeps writing unsafe code. It's not clear from the wording which case this was but they do say it was fixed, rather than declaring it an unmitigated disaster ;-)