on jenkins.plone.org collective.xmltestreport fails

Looks like test-setup is a never ending story. I'am a bit puzzled that 
we count so much on testing and jenkins and all the setup is so fragile.

http://jenkins.plone.org/job/plone-5.0-python-2.7/2593/console

collective.xmltestreport fails. We may need tests for it ;)

https://github.com/collective/collective.xmltestreport/tree/master/collective/xmltestreport 
-> test free

Traceback (most recent call last):
   File "/home/jenkins/workspace/plone-5.0-python-2.7/bin/jenkins-test", 
line 491, in <module>
     '--test-path', 
'/home/jenkins/.buildout/eggs/zope.globalrequest-1.0-py2.7.egg',
   File 
"/home/jenkins/.buildout/eggs/collective.xmltestreport-1.3.1-py2.7.egg/collective/xmltestreport/runner.py", 
line 60, in run
     failed = run_internal(defaults, args, script_parts=script_parts)
   File 
"/home/jenkins/.buildout/eggs/collective.xmltestreport-1.3.1-py2.7.egg/collective/xmltestreport/runner.py", 
line 77, in run_internal
     runner.options.output.writeXMLReports()
   File 
"/home/jenkins/.buildout/eggs/collective.xmltestreport-1.3.1-py2.7.egg/collective/xmltestreport/formatter.py", 
line 284, in writeXMLReports
     outputFile.write(prettyXML(testSuiteNode))
   File 
"/home/jenkins/.buildout/eggs/collective.xmltestreport-1.3.1-py2.7.egg/collective/xmltestreport/utils.py", 
line 42, in prettyXML
     return ElementTree.tostring(tree)
   File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1127, in 
tostring
     ElementTree(element).write(file, encoding, method=method)
   File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 821, in write
     serialize(write, self._root, encoding, qnames, namespaces)
   File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 940, in 
_serialize_xml
     _serialize_xml(write, e, encoding, qnames, None)
   File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 940, in 
_serialize_xml
     _serialize_xml(write, e, encoding, qnames, None)
   File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 938, in 
_serialize_xml
     write(_escape_cdata(text, encoding))
   File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1074, in 
_escape_cdata
     return text.encode(encoding, "xmlcharrefreplace")
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 
12613: ordinal not in range(128)



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