There is nothing for Iran to rejoice in this episode.
First, the failure of this particular mission was due to local weather condition, not due to anything done by Iranians. The fact that Americans were able to penetrate so deep in Iran should be a cause of alarm for Iran.
Second, this event contributed to ouster of "big pussy" Carter and paved way for Reagan's presidency, a presidents whose policy of introducing disruptive technologies broke down Soviet Union, a country which could have became an ally of Iran, by forcing them into bankrupting arm's race; and whose policies put US economy in an upward growth trajectory, a period of growth which lasted for three decades.
American's died while trying to save their diplomats from Iranian custody. I don't see as to how they can't be called as martyrs.