Can you check the rules file? Unless it is on-purpose, it seems that there is a duplicated directory:
/usr/share/rubber/rubber/rules/
perhaps should be:
/usr/share/rubber/rules/
Since the other is:
/usr/share/rubber/modules/
Can you check the rules file?
Unless it is on-purpose, it seems that there is a duplicated directory:
/usr/share/ rubber/ rubber/ rules/
perhaps should be:
/usr/share/ rubber/ rules/
Since the other is:
/usr/share/ rubber/ modules/