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You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 libgl1-mesa-dri : Breaks: libgl1-mesa-dri:i386 (!= 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~trusty)
 libgl1-mesa-dri:i386 : Depends: libllvm3.4:i386 but it is not going to be installed
                        Breaks: libgl1-mesa-dri (!= 10.1.3-0ubuntu0.6)