Comment 2 for bug 988260

network_check calls the zenity command to display a success/failure graphical dialog box. My guess is that you didn't have zenity installed, which caused this failure when trying to call it as seen in the attached traceback.txt.

This is present on the most current version of the test, a way to fix it would be to wrap the "call" call (pardon the redundancy) on line 57 in a try:except block, so the exception thrown (OSError) is handled gracefully, maybe by just outputting a message to stdout.