noRetryableFiles = function(failed, retryable) {
            var none = true;

            qq.each(failed, function(idx, failedId) {
                if (qq.indexOf(retryable, failedId) >= 0) {
                    none = false;
                    return false;
                }
            });

            return none;
        }
@param failed Array of file IDs that have failed
@param retryable Array of file IDs that are retryable
@returns true if none of the failed files are eligible for retry