Yep, that's the miner binary crashing for some reason. Impossible to know though because it's not open source so we cant run a debug version. Wrapping it in the shell script will reload it when it crashes so that segmentation fault would happen, but the application would restart right away.
Yes the miner crashes when your internet connection disconnects, we have fixed the issue with a workaround in the full package version, but we have to fix the miner binary for the standard units which we should have an update for next week.
FYI if your running standard units on a linux distro you can wrap the miner binary in systemd with auto-restart flag for a temp fix.