This is probably fixed in latest debhelper, #888294 Andreas
- Bug#888816: libdbus-glib-1-doc: fails to upgrad... Andreas Beckmann
- Bug#888816: marked as done (libdbus-glib-1... Debian Bug Tracking System
- Bug#888816: Acknowledgement (libdbus-glib-... Andreas Beckmann
- Bug#888816: Acknowledgement (libdbus-g... Simon McVittie