Traceback (most recent call last):

 "/nix/store/2g8bi8cnmryx63dsrwnrrgjwhm4dvg1l-python3.4-khal-0.4.0/lib/python3.4/site-packages/khal/khalendar/khalendar.py", line 175, in _update_vevent
self._dbtool.update(event.raw, href=href, etag=etag)

 "/nix/store/2g8bi8cnmryx63dsrwnrrgjwhm4dvg1l-python3.4-khal-0.4.0/lib/python3.4/site-packages/khal/khalendar/backend.py", line 253, in update
self._update_impl(vevent, href, etag)

 "/nix/store/2g8bi8cnmryx63dsrwnrrgjwhm4dvg1l-python3.4-khal-0.4.0/lib/python3.4/site-packages/khal/khalendar/backend.py", line 280, in _update_impl
dtstartend = aux.expand(vevent, self.locale['default_timezone'], href)

 "/nix/store/2g8bi8cnmryx63dsrwnrrgjwhm4dvg1l-python3.4-khal-0.4.0/lib/python3.4/site-packages/khal/khalendar/aux.py", line 62, in expand
rrule = dateutil.rrule.rrulestr(rrulestr, dtstart=vevent['DTSTART'].dt)

 "/nix/store/kp28654ln61c2yvvppklb1sxv2dpplvb-python3.4-dateutil-2.2/lib/python3.4/site-packages/dateutil/rrule.py", line 1108, in __call__
return self._parse_rfc(s, **kwargs)

 "/nix/store/kp28654ln61c2yvvppklb1sxv2dpplvb-python3.4-dateutil-2.2/lib/python3.4/site-packages/dateutil/rrule.py", line 1025, in _parse_rfc
(s.find(':') == -1 or s.startswith('RRULE:'))):TypeError: 'str' does not support the buffer interface
Traceback (most recent call last):

 "$path/test/../lib/sqlalchemy/engine/base.py", line 1063, in _execute_context
context)

 "$path/test/../lib/sqlalchemy/engine/default.py", line 442, in do_execute
cursor.execute(statement, parameters)

 "$site/MySQLdb/cursors.py", line 220, in execute
self.errorhandler(self, exc, value)

 "$site/MySQLdb/connections.py", line 36, in defaulterrorhandler
raise errorvalue

 "$site/MySQLdb/cursors.py", line 209, in execute
r = self._query(query)

 "$site/MySQLdb/cursors.py", line 372, in _query
rowcount = self._do_query(q)

 "$site/MySQLdb/cursors.py", line 335, in _do_query
db.query(q)

 "$site/MySQLdb/connections.py", line 280, in query
_mysql.connection.query(self, query)_mysql_exceptions.ProgrammingError: (1146, "Table 'test_schema.i_dont_exist' doesn't exist")