Public bug reported: In Ubuntu 20.04 LTS, it seems that Mailman3 package (3.2.2-1) is incompatible with Python 3.8 which is used in 20.04.
How to reproduce: try to subscribe a list through the web interface https://.../mailman3/postorius/lists/.../ it returns an error and in /var/log/mailman3/mailman.log you will find: Jun 08 17:35:57 2020 (6830) Uncaught runner exception: module 'time' has no attribute 'clock' Jun 08 17:35:58 2020 (6830) Traceback (most recent call last): File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 173, in _one_iteration self._process_one_file(msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 266, in _process_one_file keepqueued = self._dispose(mlist, msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/runners/incoming.py", line 79, in _dispose process(mlist, msg, msgdata, start_chain) File "/usr/lib/python3/dist-packages/mailman/core/chains.py", line 79, in process link.function(mlist, msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/chains/hold.py", line 147, in _process request_id = hold_message(mlist, msg, msgdata, SEMISPACE.join(reasons)) File "/usr/lib/python3/dist-packages/mailman/app/moderator.py", line 88, in hold_message request_id = requestsdb.hold_request( File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper return function(args[0], config.db.store, *args[1:], **kws) File "/usr/lib/python3/dist-packages/mailman/model/requests.py", line 100, in hold_request token = getUtility(IPendings).add(pendable, timedelta(days=5000)) File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper return function(args[0], config.db.store, *args[1:], **kws) File "/usr/lib/python3/dist-packages/mailman/model/pending.py", line 91, in add token = token_factory.new() File "/usr/lib/python3/dist-packages/mailman/utilities/uid.py", line 79, in new return self._next_unpredictable_id() File "/usr/lib/python3/dist-packages/mailman/utilities/uid.py", line 155, in _next_unpredictable_id x = random.random() + right_now % 1.0 + time.clock() % 1.0 AttributeError: module 'time' has no attribute 'clock' This bug has been already fixed in upstream: https://gitlab.com/mailman/mailman/-/commit/ea05bdd0f74ba06d85adad1f7d190a62e1bd4439 Workaround: patch the files /usr/lib/python3/dist-packages/mailman/ by hand and restart mailman. ** Affects: mailman Importance: Undecided Status: New ** Affects: mailman3 (Ubuntu) Importance: Undecided Status: New ** Tags: mailman3 ** Also affects: mailman3 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1882660 Title: Mailman and Python 3.8 incompatibility - unable to subscribe a list To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1882660/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
