* Axel Beckert <abe@debian.org>, 2015-05-06, 01:09:
W: zsh-common: script-not-executable usr/share/bug/zsh-common/zsh-common.bug-script W: zsh: script-not-executable usr/share/bug/zsh/zsh.bug-script W: zsh-static: script-not-executable usr/share/bug/zsh-static/zsh-static.bug-script
[...]
If this debhelper behaviour is not expected, it's probably a bug in debhelper found by lintian. Otherwise I assume a regression in lintian.
It's a bug in debhelper: #784648 -- Jakub Wilk