dpkg-deb: error: `/var/cache/apt/archives/libgwibber2_3.4.1-0ubuntu1_amd64.deb' is not a debian format archive
dpkg: error processing /var/cache/apt/archives/libgwibber2_3.4.1-0ubuntu1_amd64.deb (--unpack):
 subprocess dpkg-deb --control returned error exit status 2
dpkg-deb: error: `/var/cache/apt/archives/libgwibber-gtk2_3.4.1-0ubuntu1_amd64.deb' is not a debian format archive
dpkg: error processing /var/cache/apt/archives/libgwibber-gtk2_3.4.1-0ubuntu1_amd64.deb (--unpack):
 subprocess dpkg-deb --control returned error exit status 2
dpkg-deb: error: `/var/cache/apt/archives/gir1.2-unity-5.0_5.12.0-0ubuntu1_amd64.deb' is not a debian format archive
dpkg: error processing /var/cache/apt/archives/gir1.2-unity-5.0_5.12.0-0ubuntu1_amd64.deb (--unpack):
 subprocess dpkg-deb --control returned error exit status 2
dpkg-deb: error: `/var/cache/apt/archives/vim_2%3a7.3.429-2ubuntu2.1_amd64.deb' is not a debian format archive
dpkg: error processing /var/cache/apt/archives/vim_2%3a7.3.429-2ubuntu2.1_amd64.deb (--unpack):
 subprocess dpkg-deb --control returned error exit status 2
dpkg-deb: error: `/var/cache/apt/archives/vim-tiny_2%3a7.3.429-2ubuntu2.1_amd64.deb' is not a debian format archive
dpkg: error processing /var/cache/apt/archives/vim-tiny_2%3a7.3.429-2ubuntu2.