Package 'libc6-dev-i386' is not installed, so not removed
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 gcc-4.8-multilib : Depends: libc6-dev-i386 (>= 2.11) but it is not going to be installed
 libc6-dev-x32 : Depends: libc6-dev-i386 (= 2.19-0ubuntu6.3) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).