def log_player_ends_turn(self, player):
        """
        :param player: catan.game.Player
        """
        seconds_delta = (datetime.datetime.now() - self._latest_timestamp).total_seconds()
        self._logln('{0} ends turn after {1}s'.format(player.color, round(seconds_delta)))
        self._latest_timestamp = datetime.datetime.now()