$ rails.ruby2.4 c
User.all.map { |u| Jobs::CreateAvatarThumbnails.perform_async(upload_id: u.uploaded_avatar_id, user_id: u.id) if u.uploaded_avatar_id }
You should see something like:
[nil, "113db0ddae05b442464e73b6", "e7e4393a52970cb2cb3ebb57", "40886d7b9e5780119ac388f8", "320bcbbcbdf9c0feb791497c", "493e2c6ccf2b1fcf7ca15cc2"]