"upgradeprovision --full" fails (alpha14)

[Adam Tauno Williams]

$ scripting/bin/upgradeprovision --full
....
Processing section "[test]"
Processing section "[profiles]"
Copy privilege
Update base samdb by searching difference with reference one
Starting update of samdb
There are 0 missing objects
Reloading a merged schema, it might trigger reindexing so please be
patient
Schema reloaded !
Exception during upgrade of samdb:
Traceback (most recent call last):
  File "scripting/bin/upgradeprovision", line 1106, in update_partition
    provisionUSNs, names.invocation)
  File "scripting/bin/upgradeprovision", line 863, in update_present
    if current[0].get():
TypeError: function takes exactly 1 argument (0 given)
Update failed
Rollbacking every changes. Check the reason of the problem
In any case your system as it was before the upgrade