[Python-apps-team] Bug#975494: vdirsyncer: broken with python 3.9

[gregor herrmann]

Package: vdirsyncer
Version: 0.16.7-2
Severity: important

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vdirsyncer worked fine until yesterday, today it failed. What has
changed? python 3.8 -> python 3.9.

% python3.8 /usr/bin/vdirsyncer sync && echo $?
Syncing <a calendar pair>/<a calendar name>
Syncing <a contacts pair>/<a contacts name>
0

% python3.9 /usr/bin/vdirsyncer sync && echo $? 
Syncing <a contacts pair>/<a contacts name>
Syncing <a calendar pair>/<a calendar name>
error: Unknown error occured for <a contacts pair>/<a contacts name>: 'xml.etree.ElementTree.Element' object has no attribute 'getiterator'
error: Use `-vdebug` to see the full traceback.
error: Unknown error occured for <a calendar pair>/<a calendar name>: 'xml.etree.ElementTree.Element' object has no attribute 'getiterator'
error: Use `-vdebug` to see the full traceback.
error: 2 out of 4 tasks failed.


With -vdebug I see lot's of xml, and then at the end:

debug:  <response>
debug:   <href>/gregoa/home/22289030-6ADE-4142-811B-D5D4FCA55F29.ics</href>
debug:   <propstat>
debug:    <prop>
debug:     <resourcetype/>
debug:     <getcontenttype>text/calendar; component=vevent</getcontenttype>
debug:     <getetag>"19f650ff8e93d96b195b4b7310c84d40"</getetag>
debug:    </prop>
debug:    <status>HTTP/1.1 200 OK</status>
debug:   </propstat>
debug:  </response>
debug: </multistatus>
debug: Already normalized: '<calendar>'
error: Unknown error occured for <a calendar pair>/<a calendar name>: 'xml.etree.ElementTree.Element' object has no attribute 'getiterator'
error: Use `-vdebug` to see the full traceback.
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/cli/tasks.py", line 64, in sync_collection
debug:     sync.sync(
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/sync/__init__.py", line 136, in sync
debug:     b_nonempty = b_info.prepare_new_status()
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/sync/__init__.py", line 45, in prepare_new_status
debug:     for href, etag in self.storage.list():
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/storage/dav.py", line 795, in list
debug:     for x in DAVStorage.list(self):
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/storage/dav.py", line 637, in list
debug:     for href, etag, _prop in rv:
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/storage/dav.py", line 593, in _parse_prop_responses
debug:     props = _merge_xml(props)
debug:   File "/usr/lib/python3/dist-packages/vdirsyncer/storage/dav.py", line 125, in _merge_xml
debug:     rv.extend(item.getiterator())
error: 2 out of 4 tasks failed.



Cheers,
gregor


- -- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'unstable-debug'), (500, 'oldoldstable'), (500, 'experimental'), (500, 'testing'), (500, 'stable'), (500, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.9.0-1-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C, LC_CTYPE=de_AT.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/bash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages vdirsyncer depends on:
ii  python3                    3.9.0-3
ii  python3-atomicwrites       1.4.0-1
ii  python3-click              7.1.2-1
ii  python3-click-log          0.2.1-2
ii  python3-click-threading    0.4.4-2
ii  python3-requests           2.24.0+dfsg-1
ii  python3-requests-toolbelt  0.8.0-1.1

vdirsyncer recommends no packages.

Versions of packages vdirsyncer suggests:
pn  python3-requests-oauthlib  <none>
pn  vdirsyncer-doc             <none>

- -- no debconf information

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