Dear Maintainer, After sphinx-autoapi/3.0.0-0.1 entered in unstable [1], I'm able to build successfully your package in a sid chroot environment. I can reproduce the failure reported in this bug after building against sphinx-autoapi/2.0.0-2 from snapshot.d.o [2].
Kind Regards [1] https://tracker.debian.org/news/1496099/accepted-sphinx-autoapi-300-01-source-into-unstable [2] https://snapshot.debian.org/package/sphinx-autoapi/2.0.0-2/
