The bottom line is that this dep8 test flagged a real issue and is an opportunity to improve this package. Adding allow-stderr is a workadound, and one I'm afraid will likely remain there forever. The correct fix is to bump the dh level.
I suggest to rephrase this bug to indicate the dh level needs to be bumped, and leave it open even after the allow-stderr workaround is applied.
The bottom line is that this dep8 test flagged a real issue and is an opportunity to improve this package. Adding allow-stderr is a workadound, and one I'm afraid will likely remain there forever. The correct fix is to bump the dh level.
I suggest to rephrase this bug to indicate the dh level needs to be bumped, and leave it open even after the allow-stderr workaround is applied.