def _set_start(self):
        """ Sets the start timestamp and formatted time to the current time. """
        init_time = time.time()
        formatted_time = datetime.datetime.fromtimestamp(init_time).strftime('%Y_%m_%d_%Hh%Mm%Ss')
        run_info_dict = self._run_information[self.v_crun]
        run_info_dict['timestamp'] = init_time
        run_info_dict['time'] = formatted_time
        if self._environment_hexsha is not None:
            run_info_dict['short_environment_hexsha'] = self._environment_hexsha[0:7]
Sets the start timestamp and formatted time to the current time.