I'm not going to argue this any further, but "recent" is exactly the point...if all of the bots had turned red you'd understand that it needed to be fixed *immediately* or the triggering change (regardless of what the actual bug was) backed out.  Since it isn't all the bots it isn't that critical, but eventually we want to make it critical (ie: someday it will be a requirement that *all* stable bots pass before a change gets *committed*...but that day is still a longer way off than I'd like, since I at least don't have much time for working on the workflow stuff).