id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
26937	'NoneType' object has no attribute '_meta' in manage.py dumpdata auth.user	Jerome Leclanche	nobody	"In 1.10rc1 I get the following when running `./manage.py dumpdata auth.user --traceback`::

{{{
[Traceback (most recent call last):
  File ""./manage.py"", line 11, in <module>
    execute_from_command_line(sys.argv)
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/management/__init__.py"", line 367, in execute_from_command_line
    utility.execute()
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/management/__init__.py"", line 359, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/management/base.py"", line 305, in run_from_argv
    self.execute(*args, **cmd_options)
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/management/base.py"", line 356, in execute
    output = self.handle(*args, **options)
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/management/commands/dumpdata.py"", line 200, in handle
    object_count=object_count,
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/serializers/__init__.py"", line 129, in serialize
    s.serialize(queryset, **options)
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/serializers/base.py"", line 79, in serialize
    for count, obj in enumerate(queryset, start=1):
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/management/commands/dumpdata.py"", line 161, in get_objects
    models = serializers.sort_dependencies(app_list.items())
  File ""/home/adys/.local/share/virtualenvs/hs/lib/python3.5/site-packages/django/core/serializers/__init__.py"", line 195, in sort_dependencies
    if field.remote_field.through._meta.auto_created:
AttributeError: 'NoneType' object has no attribute '_meta'
}}}

For reference, here is my user model:
https://github.com/HearthSim/HSReplay.net/blob/51c269f2cc329d859df70705e2181666d443434c/hsreplaynet/accounts/models.py#L26-L36"	Bug	closed	Uncategorized	1.10	Normal	needsinfo			Unreviewed	0	0	0	0	0	0