# File lib/aeolus_image/model/factory/builder.rb, line 39
        def failed_push_count(target_image_id, provider, account)
          builders.count {|b| b.status == 'FAILED' && b.operation == 'push' && b.target_image_id == target_image_id &&
                              b.provider == provider && b.provider_account_identifier == account}
        end