protected function outputError($errorNumber, TestInterface $test, $exception)
    {
        $this->output->writeln(sprintf("  %d)%s:", $errorNumber, $test->getTitle()));

        $message = sprintf("     %s", str_replace(PHP_EOL, PHP_EOL . "     ", $exception->getMessage()));
        $this->output->writeln($this->color('error', $message));

        $location = sprintf('     at %s:%d', $exception->getFile(), $exception->getLine());
        $this->output->writeln($location);

        $this->outputTrace($exception->getTrace());
    }