[[!comment format=mdwn
 username="joey"
 subject="""comment 4"""
 date="2016-08-03T16:02:46Z"
 content="""
--failed can now be used to retry only failed transfers. So that will be a
lot faster in that specific case. 

Leaving this bug open for the general wishlist that copy --fast be somehow
a lot faster than it is at finding things that need to be copied.
"""]]
