Fatal errors may cause infinite Feeds batch runs and exasperate you!
Every developer knows that kind of situations, where you spend hours chasing a problem, that suddenly appeared, and the more you debug and dive into fixing it, the more you get confused and unnerved. And when you finally have found the solution, it turns out, that it was a very simple and stupid bug, you've created unwittingly - the sort of cause, you haven't ever thought about, and you feel like bumping your head hard onto the wall...