Comment 8 for bug 631275

i could reproduce the behaviour with rsync 3.0.7 ..

check your machines for different rsync versions. For me rsync 3.0.4 and 3.0.7 behave differently with an existing RSYNC_RSH entry.

3.0.4 ignores on rsync://url
3.0.7 tries to use it on the same url

i committed a fix to launchpad.

for now you can:

a) unset the variable
or
b) patch rsyncbackend.py as don here
http://bazaar.launchpad.net/~ed.so/duplicity/RSYNC_RSH-fix/revision/675/duplicity/backends/rsyncbackend.py

regards ede/duply.net