title: celery: ImportError: No module named time
body: <p>Trying to start <code>celery</code>. I get an error.</p>
  
  <pre><code>Traceback (most recent call last):
    File "manage.py", line 9, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
      utility.execute()
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 327, in execute
      django.setup()
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate
      app_config.import_models(all_models)
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models
      self.models_module = import_module(models_module_name)
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
      __import__(name)
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django_celery_beat/models.py", line 19, in &lt;module&gt;
      from .clockedschedule import clocked
    File "/home/m0nte-cr1st0/.virtualenvs/finbee/local/lib/python2.7/site-packages/django_celery_beat/clockedschedule.py", line 6, in &lt;module&gt;
      from celery.utils.time import maybe_make_aware
  ImportError: No module named time
  </code></pre>
  
  <p>I'm use</p>
  
  <pre><code>celery == 3.1.25
  django-celery == 3.1.17
  django-celery-beat == 1.5.0
  </code></pre>
  
  <p><em>Celery versions> 4.0 cannot be used.</em></p>