The full error from nova-compute:

2017-09-08 23:17:17.049 3076 INFO nova.compute.manager [req-6b68864b-5c95-486f-bb34-8b622248b540 c2309143b5b149fbaf4982c3ef164ffc b6117674a71049a98abd8133409db57f - default default] [instance: a9548264-c743-4abb-a739-c5aa372472ee] Took 13.36 seconds to spawn the instance on the hypervisor.
2017-09-08 23:17:17.050 3076 DEBUG nova.compute.manager [req-6b68864b-5c95-486f-bb34-8b622248b540 c2309143b5b149fbaf4982c3ef164ffc b6117674a71049a98abd8133409db57f - default default] [instance: a9548264-c743-4abb-a739-c5aa372472ee] Checking state _get_power_state /openstack/venvs/nova-testing/local/lib/python2.7/site-packages/nova/compute/manager.py:1160
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [req-6b68864b-5c95-486f-bb34-8b622248b540 c2309143b5b149fbaf4982c3ef164ffc b6117674a71049a98abd8133409db57f - default default] [instance: a9548264-c743-4abb-a739-c5aa372472ee] Unexpected build failure, not rescheduling build.: TypeError: __init__() got an unexpected keyword argument 'max_mem_kb'
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee] Traceback (most recent call last):
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]   File "/openstack/venvs/nova-testing/local/lib/python2.7/site-packages/nova/compute/manager.py", line 1826, in _do_build_and_run_instance
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]     filter_properties)
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]   File "/openstack/venvs/nova-testing/local/lib/python2.7/site-packages/nova/compute/manager.py", line 2077, in _build_and_run_instance
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]     self._update_instance_after_spawn(context, instance)
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]   File "/openstack/venvs/nova-testing/local/lib/python2.7/site-packages/nova/compute/manager.py", line 1589, in _update_instance_after_spawn
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]     instance.power_state = self._get_power_state(context, instance)
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]   File "/openstack/venvs/nova-testing/local/lib/python2.7/site-packages/nova/compute/manager.py", line 1162, in _get_power_state
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]     return self.driver.get_info(instance).state
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]   File "/openstack/venvs/nova-testing/local/lib/python2.7/site-packages/nova/virt/lxd/driver.py", line 476, in get_info
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]     cpu_time_ns=0)
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee] TypeError: __init__() got an unexpected keyword argument 'max_mem_kb'
2017-09-08 23:17:17.074 3076 ERROR nova.compute.manager [instance: a9548264-c743-4abb-a739-c5aa372472ee]