I've never used a fly machine and probably never will, but I really enjoy the way fly's blog is written, particularly these bug ones - it tickles my brain in the exact way that chasing a bug does. And it's nice to get a bit of a look into rust and to the complexities of fly itself.

Cool blog but a little concerned. I’ve never had to write anything this complex and multithreaded before but I would have thought that rust would guard against something like this better… isn’t fearless concurrency the tag line

That’s still the tag line. The bug was in the part that did bit manipulation inside the concurrency primitive itself, and therefore not a concurrency bug as such.