Failing test svnsync_tests.py 28: copy and reencode non-UTF-8 svn:* props

Hi,

I get a test failure of svnsync_tests.py 28: copy and reencode
non-UTF-8 svn:* props. The following error appears:

svnsync: E720087: Can't convert string from 'ISO-8859-3' to 'UTF-8':
svnsync: E720087: 2011-01-11T20:57:24.206641Z

See also fails.log in attachment.

This happens on 1.7.x as well as on trunk. On Windows XP (Visual C
Express 2008).

ISTR that this error is already there for quite some time, but I
didn't yet take the time to investigate further (and my build
environment was broken for some time). I guess it has something to do
with r1084335, which introduced functionality to let svnsync translate
properties that were not encoded in UTF-8.

Is anyone else seeing this? Any ideas?

-- 
Johan