[[!comment format=mdwn
 username="joey"
 subject="""comment 1"""
 date="2015-05-22T19:12:37Z"
 content="""
I think I've seen this where the shell was running some command
at (non-interactive) login that output stuff and so screwed up the rsync
protocol.

rsync with sufficient -vvvv will print out a lot of debugging info about
the protocol.
"""]]