Preparing to replace libpam-modules 1.1.3-7ubuntu2 (using .../libpam-modules_1.1.3-7ubuntu2.2_amd64.deb) ...
De-configuring libpam-modules:i386 ...
Unpacking replacement libpam-modules ...
Preparing to replace libpam-modules:i386 1.1.3-7ubuntu2 (using .../libpam-modules_1.1.3-7ubuntu2.2_i386.deb) ...
Unpacking replacement libpam-modules:i386 ...
dpkg: error processing /var/cache/apt/archives/libpam-modules_1.1.3-7ubuntu2.2_i386.deb (--unpack):
 './usr/share/man/man8/pam_umask.8.gz' is different from the same file on the system