version.getversion_svn fails for Python 3.8 but probably since Python 3.6
C:\pwb\SVN\core>pwb.exe version
WARNING: c:\python38\lib\site-packages\pywikibot\version.py:119: DeprecationWarning: pywikibot.version.getversion_svn is deprecated for 5 years and 1 month; use getversion_svn_setuptools instead.
(tag, rev, date, hsh) = vcs_func(_program_dir)
WARNING: c:\python38\lib\site-packages\pywikibot\version.py:270: DeprecationWarning: pywikibot.version.svn_rev_info is deprecated for 5 years and 1 month; use getversion_svn_setuptools instead.
tag, rev, date = svn_rev_info(_program_dir)
Pywikibot: pywikibot/__init__.py (, -1 (unknown), 2020/05/25, 15:30:08, UNKNOWN)
Release version: 3.1.dev0
requests version: 2.22.0
cacerts: c:\python38\lib\site-packages\certifi\cacert.pem
certificate test: ok
Python: 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:37:50) [MSC v.1916 64 bit (AMD64)]
PYWIKIBOT_DIR: Not set
PYWIKIBOT_DIR_PWB: c:\python38\lib\site-packages\pywikibot\scripts
PYWIKIBOT_NO_USER_CONFIG: Not set
Config base dir: C:\pwb\SVN\core
C:\pwb\SVN\core>The reason is a change in time.struct_time where the n_fields attribut is 11 and bigger then the sequence length. n_sequence_fields should be used instead. I guess len() works too.