Exception on update_messages w/ SQLite backend

Running against a local burrow instance, thru the WSGI interface w/ a SQLite backend, first create a message on the burrow server:

curl -X PUT -H 'Content-Type: text/plain' -d 'message body' 'http://localhost:8080/v1.0/acct/queue/messageid?ttl=5000'

Then attempt to update all messages in that queue:

curl -X POST 'http://localhost:8080/v1.0/acct/queue?ttl=3000'

And the server will throw:

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/eventlet/wsgi.py", line 336, in handle_one_response
    result = self.application(self.environ, start_response)
  File "burrow/frontend/wsgi.py", line 111, in __call__
    return self._routes(*args, **kwargs)
  File "/usr/lib/pymodules/python2.7/routes/middleware.py", line 131, in __call__
    response = self.app(environ, start_response)
  File "/usr/lib/pymodules/python2.7/webob/dec.py", line 147, in __call__
    resp = self.call_func(req, *args, **self.kwargs)
  File "/usr/lib/pymodules/python2.7/webob/dec.py", line 208, in call_func
    return self.func(req, *args, **kwargs)
  File "burrow/frontend/wsgi.py", line 122, in _route
    return method(req, **args)
  File "/usr/lib/pymodules/python2.7/webob/dec.py", line 161, in __call__
    return self.func(req, *args, **kw)
  File "burrow/frontend/wsgi.py", line 53, in wrapper
    res = method(self, req, account, queue, *args, **kwargs)
  File "burrow/frontend/wsgi.py", line 178, in _post_queue
    self.backend.update_messages(account, queue, attributes, filters)]
  File "burrow/backend/sqlite.py", line 144, in update_messages
    self.db.execute(query % ','.join(ids), values)
OperationalError: no such column: msg

A POST without an attribute update will not trigger this error.