Preparing to unpack .../libjson-c2_0.11-3ubuntu1.2_amd64.deb ...
Unpacking libjson-c2:amd64 (0.11-3ubuntu1.2) over (0.11-3ubuntu1) ...
Preparing to unpack .../libblkid1_2.20.1-5.1ubuntu20.1_amd64.deb ...
Unpacking libblkid1:amd64 (2.20.1-5.1ubuntu20.1) over (2.20.1-5.1ubuntu20) ...
Preparing to unpack .../libc6_2.19-0ubuntu6.1_i386.deb ...
De-configuring libc6:amd64 (2.19-0ubuntu6) ...
Unpacking libc6:i386 (2.19-0ubuntu6.1) over (2.19-0ubuntu6) ...
Preparing to unpack .../libc6_2.19-0ubuntu6.1_amd64.deb ...
dpkg: error processing archive /var/cache/apt/archives/libc6_2.19-0ubuntu6.1_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 2