Bug#757800: still broken with bibutils 5.6-1

[David Bremner]

I attach a build log. Since it seems like a transition is
scheduled [1], I'll shortly bump the severity to serious.

   https://release.debian.org/transitions/html/auto-bibutils.html

haskell-hs-bibutils_4.12-9fail1_amd64.build
Description: Binary data