Package: libstdc++6-7-dbg Version: 7-20161112-1 Unpacking libstdc++6-7-dbg:amd64 (7-20161112-1) ... dpkg: error processing archive /tmp/apt-dpkg-install-K00oDb/18-libstdc++6-7-dbg_7-20161112-1_amd64.deb (--unpack): trying to overwrite '/usr/lib/x86_64-linux-gnu/debug/libstdc++.a', which is also in package libstdc++6-6-dbg:amd64 6.2.0-10 dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: /tmp/apt-dpkg-install-K00oDb/18-libstdc++6-7-dbg_7-20161112-1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)