Comment 3 for bug 1240667

Thanks for reporting this bug.
It actually gives a concrete example of a use case that we said was not supported.

Some text we had previously written with regard to compatibility is below:
 | cloud-tools pockets are not guaranteed compatible with other cloud archive
 | pockets, and could possibly break things on 12.04.  For example:
 | * if you have a stack of software that works on lxc on 12.04, that
 | software might break with cloud-tools version of the software.
 | * The lxc driver in nova that is present in havana-updates is not
 | guaranteed to function with lxc that is in cloud-tools-updates.

There really is no way that we can realistically support any 12.04 package that was built against 12.04 level dependencies with 13.10 (or later) level packages.