Comment 17 for bug 1533554

Is this any relevant ?

test@Asgard:~$ sudo update-apt-xapian-index
[sudo] Mot de passe de test :
The index /var/lib/apt-xapian-index is up to date
Exception ignored in: <bound method ServerProgress.__del__ of <axi.indexer.ServerProgress object at 0x7f78e07c6588>>
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/axi/indexer.py", line 306, in __del__
TypeError: 'NoneType' object is not callable
test@Asgard:~$