$ trove module-list
<snip>

DEBUG (session:342) REQ: curl -g -i -X GET http://10.242.1.250:8779/v1.0/87b585295300479aa71b503ec0b2d0af/modules -H "User-Agent: trove keystoneauth1/2.15.0 python-requests/2.11.1 CPython/2.7.12" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}2e950db33dc05a4bea9564e1209658b32d9884a1"
INFO (connectionpool:214) Starting new HTTP connection (1): 10.242.1.250
DEBUG (connectionpool:401) "GET /v1.0/87b585295300479aa71b503ec0b2d0af/modules HTTP/1.1" 200 15
DEBUG (session:371) RESP: [200] Content-Type: application/json Content-Length: 15 Date: Fri, 02 Dec 2016 02:14:12 GMT Connection: keep-alive
RESP BODY: {"modules": []}

DEBUG (shell:754) 'access'
Traceback (most recent call last):
  File "/opt/stack/python-troveclient/troveclient/shell.py", line 749, in main
    sys.argv[1:]))
  File "/opt/stack/python-troveclient/troveclient/shell.py", line 563, in main
    args.func(self.cs, args)
  File "/opt/stack/python-troveclient/troveclient/v1/shell.py", line 1744, in do_module_list
    roles = cs.client.auth.auth_ref._data['access']['user']['roles']
KeyError: 'access'
ERROR: 'access'