Adventures In KVM Land

Hopefully this saves someone doing a Google search some time. Running something like sudo ubuntu-vm-builder kvm trusty tahir on Ubuntu 14.04 at least seems to sometimes generate the following error (emphasis mine):

Preparing to unpack .../linux-image-virtual_3. ...
Unpacking linux-image-virtual ( ...
, stderr: grep: /proc/cpuinfo: No such file or directory
This kernel does not support a non-PAE CPU.
dpkg: error processing archive /var/cache/apt/archives/linux-image-3.13.0-52-generic_3.13.0-52.86_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-52-generic /boot/vmlinuz-3.13.0-52-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-52-generic /boot/vmlinuz-3.13.0-52-generic
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

Ends up this is an older known bug. Adding --addpkg linux-image-generic seems to work as recently as Trusty Tahir.