There is one pretty strange thing though, which I can't explain. I once
got an error "trying to load incoherent eln" which is mentioned in
bug#45103. I can't say much else about this though, not even what the
cause of this might be. It was a build with -j8 if that matters. Maybe
elns are modified during dumping, so that a second dump cannot be done?
But that wouldn't explain why it succeeds most of the time. No idea,
and not easily reproducible, alas.
Yes, I've seen those, too, but very seldom (like -- once a month?), and
I haven't been able to reproduce it.