我正在运行python manage.py runserver或migrate，在这两个命令中，它都卡住了执行系统检查。你能帮助我了解这个问题是什么以及如何解决它吗？

Admins-MacBook-Pro:driveu_backend gathole$ python manage.py runserver
/Users/gathole/.virtualenvs/du/lib/python2.7/site-packages/social_auth/models.py:4: RemovedInDjango19Warning: django.utils.importlib will be removed in Django 1.9.
  from django.utils.importlib import import_module

/Users/gathole/.virtualenvs/du/lib/python2.7/site-packages/social_auth/utils.py:14: RemovedInDjango19Warning: The utilities in django.db.models.loading are deprecated in favor of the new application loading system.
  from django.db.models.loading import get_model

/Users/gathole/.virtualenvs/du/lib/python2.7/site-packages/social_auth/models.py:4: RemovedInDjango19Warning: django.utils.importlib will be removed in Django 1.9.
  from django.utils.importlib import import_module

/Users/gathole/.virtualenvs/du/lib/python2.7/site-packages/social_auth/utils.py:14: RemovedInDjango19Warning: The utilities in django.db.models.loading are deprecated in favor of the new application loading system.
  from django.db.models.loading import get_model

Performing system checks...

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