Failing on CentOS 6

[kostajh]

I got here via geerlingguy/drupal-vm#374

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I'm getting these errors with the stock Firefox 38 on CentOS 6 (with the Selenium role enabled), and with Firefox 42.

exception 'WebDriver\Exception\UnknownError' with message 'Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:

process 20424: D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/var/lib/dbus/machine-id": No such file or directory
See the manual page for dbus-uuidgen to correct this issue.
D-Bus not built with -rdynamic so unable to print a backtrace
in /var/www/example/vendor/instaclick/php-webdriver/lib/WebDriver/Exception.php:15