TypeError: 'NoneType' object is not iterable

[hongbin]

I am using Fuxi with os-brick and I couldn't get the correct error message in the log. Instead, the logs were populated with the trace below:

Traceback (most recent call last):
  File "/usr/lib/python2.7/logging/__init__.py", line 861, in emit
    msg = self.format(record)
  File "/usr/local/lib/python2.7/dist-packages/oslo_log/handlers.py", line 100, in format
    return logging.StreamHandler.format(self, record)
  File "/usr/lib/python2.7/logging/__init__.py", line 734, in format
    return fmt.format(record)
  File "/usr/local/lib/python2.7/dist-packages/oslo_log/formatters.py", line 273, in format
    for arg in record.args:
TypeError: 'NoneType' object is not iterable

[Matt Riedemann (mriedem)]

https://review.openstack.org/#/c/447334/

[Sean Dague (sdague)]

Note, this affects a ton of projects.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/oslo.privsep 1.18.0 release.