Apparently python3.4 showed up since python-bcrypt was last uploaded. The result is that trying to build fails on the python3.4 pass due to the associated dev package not being pulled in by python3-dev.
Adding python3-all-dev to the build-deps seems to fix the problem. I care because this impacts FreedomBox. I'll be happy to do an NMU if you don't have time to fix this bug before the impending auto-removal deadline. Bdale -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org