Version 0.3.1-1 of bookletimposer is marked for autoremoval from testing on Wed 08 Jun 2022. It is affected by #1010820. It depends (transitively) on nvidia-graphics-drivers-tesla-470, pypdf2, affected by #1010820, #1010821, #1011146. You should try to prevent the removal by fixing these RC bugs.
Problems while searching for a new upstream version
high
uscan had problems while searching for a new upstream version:
uscan warning: In debian/watch,
no matching refs for watch line
https://git.codecoop.org/kjo/bookletimposer.git refs/tags/(\d.+)