Kill all workers and die ourselves.

        This runs in response to SIGABRT, from a specific invocation
        of the ``kill`` command.  It also runs if
        :meth:`stop_gracefully` is called more than once.

def scram(self):
        '''Kill all workers and die ourselves.

        This runs in response to SIGABRT, from a specific invocation
        of the ``kill`` command.  It also runs if
        :meth:`stop_gracefully` is called more than once.

        '''
        self.stop_all_children()
        signal.signal(signal.SIGTERM, signal.SIG_DFL)
        sys.exit(2)