Run of unchanged for crossguid

Try this locally (using the lintian-brush package):

debcheckout crossguid
cd crossguid
just-build
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  File "/home/janitor/debian-janitor/breezy/breezy/revisionspec.py", line 218, in in_history
    return self._match_on_and_check(branch, revs=None)
  File "/home/janitor/debian-janitor/breezy/breezy/revisionspec.py", line 206, in _match_on_and_check
    info = self._match_on(branch, revs)
  File "/home/janitor/debian-janitor/breezy/breezy/revisionspec.py", line 719, in _match_on
    dt = datetime.datetime(year=year, month=month, day=day,
ValueError: month must be in 1..12

brz 3.2.0dev on python 3.8.3 (Linux-5.6.0-2-amd64-x86_64-with-glibc2.29)
arguments: ['/home/janitor/debian-janitor/breezy/breezy/__main__.py',
    'builddeb', '--builder=sbuild -A -v -c unstable-amd64-sbuild', '--result-
    dir=/home/janitor/tmp/tmp407hoo8d']
plugins: bash_completion[3.2.0dev], changelog_merge[3.2.0dev],
    commitfromnews[3.2.0dev], cvs[3.2.0dev], darcs[3.2.0dev], debian[3.0.0],
    email[3.2.0dev], etckeeper[unknown], fastimport[3.2.0dev],

Full worker log Full build log