that I’m going to get right on it and fix it. It came from Apple Mail 9.3 on El Capitan 10.11.4, presumably when it was retrieving mail because I wasn’t interacting with the app.
No indication of what command was exiting or why it was issuing a non-zero status. Totally useless.
People who I’ve managed knew never to let me see an error message that was not self-evident as to the problem, and more importantly, what to do about it. It’s OK to offer the user a bit of information as long as they’re pointed to where they can get a full explanation. Apple does neither. This is lazy programming.