The garbage collection task has not been specified correctly.

In mediagoblin/init/celery/init.py, mediagoblin.submit.task.garbage_collection is specified.

The task in mediagoblin/submit/task.py is called collect_garbage

Run celery with -l info to see the error produced.

Attempt to delete a non-existent user using bin/gmg deleteuser and you'll get a Traceback similar to below.

$ bin/gmg deleteuser idontexist
Traceback (most recent call last):
  File "bin/gmg", line 9, in <module>
    load_entry_point('mediagoblin==0.7.1.dev', 'console_scripts', 'gmg')()
  File "/path/to/mediagoblin/mediagoblin/gmg_commands/__init__.py", line 124, in main_cli
    args.func(args)
  File "/path/to/mediagoblin/mediagoblin/gmg_commands/users.py", line 132, in deleteuser
    username=unicode(args.username.lower())).one()
  File "build/bdist.linux-x86_64/egg/sqlalchemy/orm/query.py", line 2329, in one
sqlalchemy.orm.exc.NoResultFound: No row was found for one()

Same problem exists for other commands in users.py.

After some medium is processed one gets the following message:

2014-10-17 10:24:05,320 DEBUG [mediagoblin.tools.processing] No processing callback for <MediaEntry 34: Aula1>

While developing/debugging a plugin I got this message and found it very confusing. Looking at the source code I'm convinced this message should read something like No metadata processing callback for <MediaEntry 34: Aula1>

Patch provided.