wsdl2py 2.1a1 fails on Atlassian JIRA WSDL

Trying to generate code from the Atlassian JIRA WSDL fails.
wsdl2py supplied with ZSI version 2.0 runs fine, but I want to use ZSI 2.1 to get rid of PyXML.

wsdl2py -b http://jira.atlassian.com/rpc/soap/jirasoapservice-v2?wsdl

Traceback (most recent call last):
File "c:\python25\scripts\wsdl2py-script.py", line 8, in <module>
load_entry_point('ZSI==2.1-a1', 'console_scripts', 'wsdl2py')()
File "c:\python25\lib\commands.py", line 147, in wsdl2py

File "c:\python25\lib\commands.py", line 240, in _wsdl2py

File "c:\python25\lib\site-packages\zsi-2.1_a1-py2.5.egg\ZSI\generate\wsdl2python.py", line 232, in writeTypes
File "c:\python25\lib\site-packages\zsi-2.1_a1-py2.5.egg\ZSI\generate\wsdl2python.py", line 417, in fromSchema
File "c:\python25\lib\site-packages\zsi-2.1_a1-py2.5.egg\ZSI\generate\wsdl2python.py", line 544, in fromSchemaItem
File "c:\python25\lib\site-packages\zsi-2.1_a1-py2.5.egg\ZSI\generate\containers.py", line 2443, in setUp
ZSI.generate.containers.ContainerError: (u'Failure in setUp: <schema targetNamespace="http://jira.atlassian.com/rpc/soap/jirasoapservice-v2"><complexType name="ArrayOf_tns1_RemoteUser">', u'For Array could not resolve ofwhat typecode(http://beans.soap.rpc.jira.atlassian.com,RemoteUser): <schema targetNamespace="http://jira.atlassian.com/rpc/soap/jirasoapservice-v2"><complexType name="ArrayOf_tns1_RemoteUser"><complexContent><restriction>')