I am not sure that this is really a Flight rostering issue. Are Air France not obliged by law to inform the Captain of a departing flight of the full qualifications of the other subordinates flying with him in as part of his flight team.
The point raised above is absolutely frightening, the Captain should have all these details available to him prior to briefing his Flight Crew on their flying duties on the forthcoming leg of their flight.
Reference the question that was asked of Bonin on the flight deck. It would have been a far more appropriate question to be asked at the pre-flight briefing in Rio de Janeiro.