From: https://libraryupgrader2.wmflabs.org/r/mediawiki/extensions/Wikibase
```
Traceback (most recent call last):
File "/src/libup/ng.py", line 1033, in main
libup.run(args.repo, args.output)
File "/src/libup/ng.py", line 985, in run
self.composer_upgrade(self.output)
File "/src/libup/ng.py", line 523, in composer_upgrade
if lib.is_newer() and lib.is_latest_safe() and \
File "/src/libup/library.py", line 88, in is_newer
return is_greater_than(self.version, self.latest_version())
File "/src/libup/library.py", line 101, in is_greater_than
return semver.Version.parse(second) > semver.Version.parse(first)
File "/nonexistent/virtualenvs/libup-VsnhxLU2-py3.7/lib/python3.7/site-packages/semver/version.py", line 205, in parse
raise ParseVersionError('Unable to parse "{}".'.format(text))
semver.exceptions.ParseVersionError: Unable to parse "dev-master#ba6fcfd823d623ba73c2faba5a208067281c4c38".
```