Sorry, the report is incomplete because my script has a bug.
The failure happens in the clean stage: debian/rules clean dh clean --buildsystem=pybuild dh_auto_clean -O--buildsystem=pybuild I: pybuild base:311: python3.13 setup.py clean /<<PKGBUILDDIR>>/nfsometerlib/config.py:176: SyntaxWarning: invalid escape sequence '\d' _RE_VERS_NEW = re.compile('^v(\d+)(\.\d+)?$') /<<PKGBUILDDIR>>/nfsometerlib/config.py:177: SyntaxWarning: invalid escape sequence '\d' _RE_VERS_OLD_MAJOR = re.compile('^vers=(\d+)$') /<<PKGBUILDDIR>>/nfsometerlib/config.py:178: SyntaxWarning: invalid escape sequence '\d' _RE_VERS_OLD_MINOR = re.compile('^minorversion=(\d+)$') /<<PKGBUILDDIR>>/nfsometerlib/options.py:580: SyntaxWarning: invalid escape sequence '\S' return re.sub('\\\\f\S', '', fmt) /<<PKGBUILDDIR>>/nfsometerlib/options.py:587: SyntaxWarning: invalid escape sequence '\S' return re.sub('\\\\f\S', '', Traceback (most recent call last): File "/<<PKGBUILDDIR>>/setup.py", line 19, in <module> import nfsometerlib.options File "/<<PKGBUILDDIR>>/nfsometerlib/options.py", line 17, in <module> import six ModuleNotFoundError: No module named 'six' E: pybuild pybuild:389: clean: plugin distutils failed with: exit code=1: python3.13 setup.py clean dh_auto_clean: error: pybuild --clean -i python{version} -p "3.13 3.12" returned exit code 13 make: *** [debian/rules:7: clean] Error 25 dpkg-buildpackage: error: debian/rules clean subprocess returned exit status 2 A full build log is available here: https://people.debian.org/~sanvila/build-logs/202412/ Thanks.