I have tried with both an ogg and mp3, and I get the feeling I might have something else wrong, and thought I'd post here for some more experienced eyes. I have forked dachary's docker repo here: ​https://notabug.org/thoth/mediagoblin-docker and rancher template here ​https://github.com/ohmydocker/ohmydocker-catalog/tree/master/templates/mediagoblin Noob here with this project, so I certainly could have borked something. Here's the last section of logs right after the failure:

7/1/2017 7:49:11 PM2017-07-02 00:49:11,476 INFO    [mediagoblin.media_types.audio.transcoders] Done
7/1/2017 7:49:11 PM2017-07-02 00:49:11,619 INFO    [mediagoblin.media_types.audio.transcoders] Quitting MainLoop gracefully...
7/1/2017 7:49:40 PM2017-07-02 00:49:40,777 ERROR   [mediagoblin.processing.task] An unhandled exception was raised while processing <MediaEntry 2: RockinDoc-1-24-95>
7/1/2017 7:49:40 PM2017-07-02 00:49:40,779 WARNING [mediagoblin.processing] No idea what happened here, but it failed: OSError(39, 'Directory not empty')
7/1/2017 7:49:40 PM2017-07-02 00:49:40,900 WARNING [mediagoblin.processing] No idea what happened here, but it failed: OSError(39, 'Directory not empty')
7/1/2017 7:49:40 PMStarting server in PID 37.
7/1/2017 7:49:40 PMTraceback (most recent call last):
7/1/2017 7:49:40 PM  File "./bin/paster", line 11, in <module>
7/1/2017 7:49:40 PM    load_entry_point('PasteScript', 'console_scripts', 'paster')()
7/1/2017 7:49:40 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteScript-2.0.2-py2.7.egg/paste/script/command.py", line 102, in run
7/1/2017 7:49:41 PM    invoke(command, command_name, options, args[1:])
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteScript-2.0.2-py2.7.egg/paste/script/command.py", line 141, in invoke
7/1/2017 7:49:41 PM    exit_code = runner.run(args)
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteScript-2.0.2-py2.7.egg/paste/script/command.py", line 236, in run
7/1/2017 7:49:41 PM    result = self.command()
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteScript-2.0.2-py2.7.egg/paste/script/serve.py", line 319, in command
7/1/2017 7:49:41 PM    serve()
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteScript-2.0.2-py2.7.egg/paste/script/serve.py", line 303, in serve
7/1/2017 7:49:41 PM    server(app)
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 189, in server_wrapper
7/1/2017 7:49:41 PM    **context.local_conf)
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/util.py", line 55, in fix_call
7/1/2017 7:49:41 PM    val = callable(*args, **kw)
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/paste_factory.py", line 154, in run_fcgi_fork
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_fork.py", line 140, in run
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/preforkserver.py", line 135, in run
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/preforkserver.py", line 328, in _spawnChild
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/preforkserver.py", line 406, in _child
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 669, in run
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 705, in process_input
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 805, in _do_params
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 789, in _start_request
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 577, in run
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 328, in flush
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 299, in _write
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 720, in writeRecord
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 532, in write
7/1/2017 7:49:41 PM  File "/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/flup-1.0.3.dev_20110405-py2.7.egg/flup/server/fcgi_base.py", line 507, in _sendall
7/1/2017 7:49:41 PMsocket.error: [Errno 32] Broken pipe
7/1/2017 9:49:30 PM/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/Werkzeug-0.12.2-py2.7.egg/werkzeug/filesystem.py:63: BrokenFilesystemWarning: Detected a misconfigured UNIX filesystem: Will use UTF-8 as filesystem encoding instead of 'ANSI_X3.4-1968'
7/1/2017 9:49:30 PM  BrokenFilesystemWarning)
7/1/2017 9:49:31 PM/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/SQLAlchemy-1.1.11-py2.7-linux-x86_64.egg/sqlalchemy/sql/sqltypes.py:219: SAWarning: Unicode type received non-unicode bind param value 'active'. (this warning may be suppressed after 10 occurrences)
7/1/2017 9:49:32 PM/srv/mediagoblin.example.org/mediagoblin/lib/python2.7/site-packages/SQLAlchemy-1.1.11-py2.7-linux-x86_64.egg/sqlalchemy/sql/sqltypes.py:219: SAWarning: Unicode type received non-unicode bind param value 'moderator'. (this warning may be suppressed after 10 occurrences)

Connected

The Add to Collection page provides a pre-populated dropdown list of collections to which media can be added. By default, the dropdown box says "-- Select --." If you click Add without selecting a collection, a server error is generated with the following traceback.

2017-06-28 21:30:46,445 ERROR   [waitress] Exception when serving /u/andrew/m/1/collect/
Traceback (most recent call last):
  File "/path/to/mediagoblin/lib/python2.7/site-packages/waitress-1.0a1-py2.7.egg/waitress/channel.py", line 338, in service
    task.service()
  File "/path/to/mediagoblin/lib/python2.7/site-packages/waitress-1.0a1-py2.7.egg/waitress/task.py", line 169, in service
    self.execute()
  File "/path/to/mediagoblin/lib/python2.7/site-packages/waitress-1.0a1-py2.7.egg/waitress/task.py", line 399, in execute
    app_iter = self.channel.server.application(env, start_response)
  File "/path/to/mediagoblin/mediagoblin/app.py", line 342, in __call__
    return self.call_backend(environ, start_response)
  File "/path/to/mediagoblin/lib/python2.7/site-packages/Werkzeug-0.11.10-py2.7.egg/werkzeug/wsgi.py", line 599, in __call__
    return self.app(environ, start_response)
  File "/path/to/mediagoblin/mediagoblin/app.py", line 276, in call_backend
    return self._finish_call_backend(request, environ, start_response)
  File "/path/to/mediagoblin/mediagoblin/app.py", line 318, in _finish_call_backend
    response = controller(request)
  File "/path/to/mediagoblin/mediagoblin/decorators.py", line 47, in wrapper
    return controller(request, *args, **kwargs)
  File "/path/to/mediagoblin/mediagoblin/decorators.py", line 280, in wrapper
    return controller(request, media=media, *args, **kwargs)
  File "/path/to/mediagoblin/mediagoblin/decorators.py", line 47, in wrapper
    return controller(request, *args, **kwargs)
  File "/path/to/mediagoblin/mediagoblin/decorators.py", line 74, in new_controller_func
    return controller(request, *args, **kwargs)
  File "/path/to/mediagoblin/mediagoblin/user_pages/views.py", line 300, in media_collect
    item = CollectionItem.query.filter_by(collection=collection.id)
AttributeError: 'NoneType' object has no attribute 'id'

Draft blog posts are set to the 'failed' state. The generated blogpost_delete_url link for a draft gets routed to a 404 page.