I suspect fixing this is out of libidn's domain, so I would appreciate help to debug and report it to the gcj people. Maybe this is a known problem?
The state is known, gcj fails on fash but not on fano. The cause of this problem is not known :-( I cannot help with it, as it does not fail neither on my machine. I do not know differences between fano and fash - CPU/memory/... Usual workaround is to reschedule it again and again until it gets built on fano. Petr http://db.debian.org/machines.cgi?host=fano http://db.debian.org/machines.cgi?host=fasch