title: WorkerLostError: celery + django
body: <pre><code>[2015-04-29 13:31:48,547: ERROR/MainProcess] Process 'Worker-2' pid:34821 exited with 'signal 15 (SIGTERM)'
  [2015-04-29 13:31:48,615: ERROR/MainProcess] Task products.tasks.init[44501581-6dea-4b38-91fe-04c837888fb4] raised unexpected: WorkerLostError('Worker exited prematurely: signal 15 (SIGTERM).',)
  Traceback (most recent call last):
    File "/var/www/freelance/ve/local/lib/python2.7/site-packages/billiard/pool.py", line 1169, in mark_as_worker_lost
      human_status(exitcode)),
  WorkerLostError: Worker exited prematurely: signal 15 (SIGTERM).
  </code></pre>
  
  <p>Yesterday I got this error. Any hints where should look at?
  I'm using Django 1.6.2
  and</p>
  
  <pre><code>celery==3.1.15
  celery-with-redis==3.0
  django-celery==3.1.16
  </code></pre>
  
  <p>Thank you.</p>