call site 8 for execnet.RSync.__init__
execnet/testing/test_rsync.py - line 63
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   def test_dirsync_twice(self):
       source = self.source
       source.ensure("hello")
->     rsync = RSync(source)
       rsync.add_target(gw, self.dest1)
       rsync.send()
       assert self.dest1.join('hello').check()
       py.test.raises(IOError, "rsync.send()")
       assert rsync.send(raises=False) is None
       rsync.add_target(gw, self.dest2)
       rsync.send()
       assert self.dest2.join('hello').check()
       py.test.raises(IOError, "rsync.send()")
       assert rsync.send(raises=False) is None