Damian Johnson authored Jan 10, 2020 and Philipp Winter committed Feb 19, 2020

Personally I've never used zope, but these exceptions seem pretty clear...

  Traceback (most recent call last):
    File "/usr/local/lib/python3.5/dist-packages/twisted/trial/runner.py", line 823, in loadByName
      return self.suiteFactory([self.findByName(name, recurse=recurse)])
    ...
    File "/home/atagar/Desktop/tor/bridgedb/bridgedb/distribute.py", line 163, in Distributor
      implements(IDistribute)
    File "/usr/local/lib/python3.5/dist-packages/zope/interface/declarations.py", line 483, in implements
      raise TypeError(_ADVICE_ERROR % 'implementer')
  builtins.TypeError: Class advice impossible in Python3.  Use the @implementer class decorator instead.

Test results changed as follows...

  before: FAILED (skips=2, failures=7, errors=144, successes=321)
  after:  FAILED (skips=2, failures=7, errors=143, successes=324)