Unable to start bitmask 0.10.5 (debian testing): ImportError: cannot import name trustRootFromCertificates

bitmask is installed from the leap.se archive. Output of "bitmask":

/usr/local/lib/python2.7/dist-packages/leap/common/events/client.py:40: VisibleDeprecationWarning: zmq.eventloop.minitornado is deprecated in pyzmq 14.0 and will be removed.
    Install tornado itself to use zmq with the tornado IOLoop.
    
  from zmq.eventloop import zmqstream
Traceback (most recent call last):
  File "/usr/local/bin/bitmask", line 7, in <module>
    from leap.bitmask.gui.app import start_app
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/gui/app.py", line 34, in <module>
    from leap.bitmask.core.launcher import run_bitmaskd, pid
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/core/__init__.py", line 20, in <module>
    dummy_imports()
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/core/__init__.py", line 9, in dummy_imports
    import service
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/core/service.py", line 49, in <module>
    from leap.bitmask.core import mail_services
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/core/mail_services.py", line 37, in <module>
    from leap.bitmask.bonafide import config
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/bonafide/__init__.py", line 5, in <module>
    import config
  File "/usr/local/lib/python2.7/dist-packages/leap/bitmask/bonafide/config.py", line 44, in <module>
    from leap.common.http import HTTPClient
  File "/usr/local/lib/python2.7/dist-packages/leap/common/http.py", line 42, in <module>
    from twisted.internet.ssl import Certificate, trustRootFromCertificates
ImportError: cannot import name trustRootFromCertificates

Installed version:

bitmask:
  Installed: 0.10.5+0~20180328220313.47861+0.10.5+buster~0.g8a89b360
  Candidate: 0.10.5+0~20180328220313.47861+0.10.5+buster~0.g8a89b360
  Version table:
 *** 0.10.5+0~20180328220313.47861+0.10.5+buster~0.g8a89b360 500
        500 http://deb.leap.se/client release/buster amd64 Packages
        500 http://deb.leap.se/client release/buster i386 Packages
        100 /var/lib/dpkg/status
python-twisted:
  Installed: 17.9.0-1
Edited by kienan