"stderr: /usr/lib/python2.7/site-packages/pymysql/cursors.py:166: Warning: (1831, u'Duplicate index `block_device_mapping_instance_uuid_virtual_name_device_name_idx`. This is deprecated and will be disallowed in a future release.')",
"stderr: /usr/lib/ python2. 7/site- packages/ pymysql/ cursors. py:166: Warning: (1831, u'Duplicate index `block_ device_ mapping_ instance_ uuid_virtual_ name_device_ name_idx` . This is deprecated and will be disallowed in a future release.')",