Comment 4 for bug 1512992

In case it helps someone else having the same issue, I repaired my apt-get packages using:

$ sudo apt-get -o Dpkg::Options::="--force-overwrite" install zlib1g-dev:i386

I came up with this after reading this... https://raphaelhertzog.com/2011/08/01/understanding-dpkgs-file-overwrite-error/