Follow-up from my previous comment. The build appears to fail if I try to run it twice without running "clean" in between.
In other words, to successfully build, I ran:
fakeroot debian/rules clean fakeroot debian/rules binary-headers binary-generic binary-perarch
The drawback is it rebuilds everything (which is about 45 minutes on my machine).
Follow-up from my previous comment. The build appears to fail if I try to run it twice without running "clean" in between.
In other words, to successfully build, I ran:
fakeroot debian/rules clean
fakeroot debian/rules binary-headers binary-generic binary-perarch
The drawback is it rebuilds everything (which is about 45 minutes on my machine).