Running XMir on Saucy

[Colin Law]

Following the announcement on ubuntu-devel I have installed
unity-system-compositor as described in [1] (I did not previously have
the testing ppa enabled).  The machine boots and appears to be running
ok and
ps aux | grep unity-system-compositor
shows it to be running.  However
grep -i xmir /var/log/Xorg.0.log
shows nothing and
sudo cat /var/log/lightdm/unity-system-compositor.log
shows:

/usr/sbin/unity-system-compositor: Symbol
`_ZTVN3mir26DefaultServerConfigurationE' has different size in shared
object, consider re-linking
*** Error in `/usr/sbin/unity-system-compositor': malloc(): memory
corruption: 0x09104628 ***

Is that a bug?

Colin

[1] https://wiki.ubuntu.com/Mir/Installing