Hi! The rst transition is ongoing, breaking such scripts with every kernel version -- ie, this bug will happen again soon. While it can be done for 4.9 (making kernel-package at least work with the sources in Stretch), it still won't work with upstream kernels which is the primary purpose people use kernel-package for.
Thus, kernel packaging would need to live in a place can be held in sync with the kernel itself. And since 4.3, it does. Thus, perhaps it'd be better to tell people to "make bindeb-pkg" instead? (There's also "make deb-pkg" which is quite a bit older, but it produces heaps of stuff an ordinary user doesn't need.) Meow! -- Don't be racist. White, amber or black, all beers should be judged based solely on their merits. Heck, even if occasionally a cider applies for a beer's job, why not? On the other hand, corpo lager is not a race.