Issue #3214565 by Spokje, longwave, alexpott, Lendude: [random test failure]...

      ->start();

    // Wait until the web server has started. It is started if the port is no

    // longer available.

    for ($i = 0; $i < 1000; $i++) {

    for ($i = 0; $i < 50; $i++) {

      usleep(100000);

      if (!$this->checkPortIsAvailable($port)) {

        return $ps;

      }

      usleep(1000);

    }

    throw new \RuntimeException(sprintf("Unable to start the web server.\nERROR OUTPUT:\n%s", $ps->getErrorOutput()));

    throw new \RuntimeException(sprintf("Unable to start the web server.\nCMD: %s \nCODE: %d\nSTATUS: %s\nOUTPUT:\n%s\n\nERROR OUTPUT:\n%s", $ps->getCommandLine(), $ps->getExitCode(), $ps->getStatus(), $ps->getOutput(), $ps->getErrorOutput()));

  }

  /**