I changed nothing but now it works.

It's been over one week since I started battling this bug. I guess I'm glad it's fixed, but how, and why?

Now you can spend a week trying to reproduce the error to figure out how to make sure it is really fixed 😬

It's gotta be a bind issue.

It was a lifetime problem in Rust (a mutable borrow which never expired, which was undesired). I came up with a hack that would "solve" the problem and it worked. Eventually I removed the hack and it still worked. Looking at the diffs now, I suspect there's just something about the behavior of the borrow checker/lifetimes that I didn't fully grasp (It's like learning pointers all over again).

You probably ran the clean function of your IDE at some point 😀