rufus schedule & passenger

I have an app deployed on passenger, with a periodic job scheduled using rufus scheduler. It ran fine for a couple weeks, then apparently just up and quit, with no indication of why. I found a couple posts on the rufus mailing list suggesting maybe there were issues with this combination (rufus & passenger):

but nothing seems particularly definitive. Plus, my app ran fine for a period of time, so they must not be completely incompatible. That said, though, does anyone have anything authoritative to say about the long term stability of this combo? Or any other hints for debugging the situation? (I can't seem to get any output from my job in the Rails logs, but I don't know if that's because the job isn't running or because the logging isn't working for some reason.)