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This happened during sync from crane

May 18 10:26:45 pulp-docker01 pulp: pulp.server.async.tasks:INFO: Task failed : [afb71832-8497-4a0c-8932-f9b3d82dd93a]
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152) Task pulp.server.managers.repo.sync.sync[afb71832-8497-4a0c-8932-f9b3d82dd93a] raised unexpected: NotUniqueError(u'Tried to save duplicate unique keys (E11000 duplicate key error index: pulp_28_new.units_docker_image.$image_id_1  dup key: { : "6c3a84d798dc449313787502060b6d5b4694d7527d64a7c99ba199e3b2df834e" })',)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152) Traceback (most recent call last):
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/celery/app/trace.py", line 240, in trace_task
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     R = retval = fun(*args, **kwargs)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/server/async/tasks.py", line 473, in __call__
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     return super(Task, self).__call__(*args, **kwargs)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/server/async/tasks.py", line 103, in __call__
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     return super(PulpTask, self).__call__(*args, **kwargs)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/celery/app/trace.py", line 437, in __protected_call__
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     return self.run(*args, **kwargs)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/server/controllers/repository.py", line 760, in sync
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     sync_report = sync_repo(transfer_repo, conduit, call_config)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/server/async/tasks.py", line 658, in wrap_f
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     return f(*args, **kwargs)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp_docker/plugins/importers/importer.py", line 84, in sync_repo
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     return self.sync_step.process_lifecycle()
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/plugins/util/publish_step.py", line 562, in process_lifecycle
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     super(PluginStep, self).process_lifecycle()
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/plugins/util/publish_step.py", line 159, in process_lifecycle
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     step.process()
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/plugins/util/publish_step.py", line 232, in process
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     self._process_block(item=item)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp/plugins/util/publish_step.py", line 291, in _process_block
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     self.process_main(item=item)
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/pulp_docker/plugins/importers/v1_sync.py", line 150, in process_main
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     item.save()
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)   File "/usr/lib/python2.6/site-packages/mongoengine/document.py", line 390, in save
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152)     raise NotUniqueError(message % unicode(err))
May 18 10:26:45 pulp-docker01 pulp: celery.worker.job:ERROR: (16809-81152) NotUniqueError: Tried to save duplicate unique keys (E11000 duplicate key error index: pulp_28_new.units_docker_image.$image_id_1  dup key: { : "6c3a84d798dc449313787502060b6d5b4694d7527d64a7c99ba199e3b2df834e" })