Arvados

1. in models/container_request.rb#update_collections

manifest = Collection.where(portable_data_hash: pdh).first.manifest_text

Fails if pdh is non-nil but not found.

2. in models/container_request.rb#finalize_if_needed

      c = Container.find_by_uuid(container_uuid)
      c.lock!

Fails if container_uuid is not found.

Also, if the container_request is being destroyed, finalize_if_needed should be skipped. (It is an after_save hook, do those run on destroy?)