soledad_sync.py does not sync on leap platform 0.7 (develop branch)

--- git/bitmask ‹master› » leap test chameleon                                                                                                                                                                 1 ↵
 = [chameleon.unstable.bitmask.net] PASS: Network > Can connect to internet?
 = [chameleon.unstable.bitmask.net] PASS: Network > Is stunnel running?
 = [chameleon.unstable.bitmask.net] PASS: Network > Is shorewall running?
 = [chameleon.unstable.bitmask.net] PASS: Webapp > Can contact couchdb?
 = [chameleon.unstable.bitmask.net] PASS: Webapp > Can contact couchdb via haproxy?
 = [chameleon.unstable.bitmask.net] PASS: Webapp > Are daemons running?
 = [chameleon.unstable.bitmask.net] PASS: Webapp > Can access webapp?
 = [chameleon.unstable.bitmask.net] PASS: Webapp > Can create and authenticate and delete user via API?
 = [chameleon.unstable.bitmask.net] FAIL: Webapp > Can sync Soledad? [webapp.rb:59]:
 = [chameleon.unstable.bitmask.net]   Error running `/srv/leap/tests/helpers/soledad_sync.py f8a65b226240dbaad3f838729b60f4e9 N9gTP-IuqN3JOrmyviEPRTfmMf6XlQsQZAk4-clmdec https://panda.unstable.bitmask.net:2323/user-f8a65b226240dbaad3f838729b60f4e9`:
 = [chameleon.unstable.bitmask.net]   HTTPError(500)
 = [chameleon.unstable.bitmask.net]   Traceback (most recent call last):
 = [chameleon.unstable.bitmask.net]     File "/srv/leap/tests/helpers/soledad_sync.py", line 69, in 
 = [chameleon.unstable.bitmask.net]       result = soledad_sync(uuid, token, server)
 = [chameleon.unstable.bitmask.net]     File "/srv/leap/tests/helpers/soledad_sync.py", line 54, in soledad_sync
 = [chameleon.unstable.bitmask.net]       db.sync(server, creds=creds, autocreate=False)
 = [chameleon.unstable.bitmask.net]     File "/usr/lib/python2.7/dist-packages/u1db/__init__.py", line 328, in sync
 = [chameleon.unstable.bitmask.net]       autocreate=autocreate)
 = [chameleon.unstable.bitmask.net]     File "/usr/lib/python2.7/dist-packages/u1db/sync.py", line 101, in sync
 = [chameleon.unstable.bitmask.net]       self.source._replica_uid)
 = [chameleon.unstable.bitmask.net]     File "/usr/lib/python2.7/dist-packages/u1db/remote/http_target.py", line 46, in get_sync_info
 = [chameleon.unstable.bitmask.net]       res, _ = self._request_json('GET', ['sync-from', source_replica_uid])
 = [chameleon.unstable.bitmask.net]     File "/usr/lib/python2.7/dist-packages/u1db/remote/http_client.py", line 217, in _request_json
 = [chameleon.unstable.bitmask.net]       content_type)
 = [chameleon.unstable.bitmask.net]     File "/usr/lib/python2.7/dist-packages/u1db/remote/http_client.py", line 209, in _request
 = [chameleon.unstable.bitmask.net]       return self._response()
 = [chameleon.unstable.bitmask.net]     File "/usr/lib/python2.7/dist-packages/u1db/remote/http_client.py", line 160, in _response
 = [chameleon.unstable.bitmask.net]       raise errors.HTTPError(resp.status, body, headers)
 = [chameleon.unstable.bitmask.net]   HTTPError: HTTPError(500)
 = [chameleon.unstable.bitmask.net] Tests halted on failure (because of --no-continue).
 = bailing out 



root@panda:/srv/leap/tapicero# grep f8a65b226240dbaad3f838729b60f4e9 /var/log/syslog
Apr  8 17:27:05 panda tapicero[17197]: Prepared storage user-f8a65b226240dbaad3f838729b60f4e9

root@unstable1:/tmp# dpkg -l soledad*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                           Version                      Architecture                 Description
+++-==============================================-============================-============================-==================================================================================================
ii  soledad-common                                 0.7.0~20150402161726.81+whee all                          Synchronization of locally encrypted data among devices.
ii  soledad-server                                 0.7.0~20150402161726.81+whee all                          Synchronization of locally encrypted data among devices.

(from redmine: created on 2015-04-08, closed on 2015-04-17)