non-standard-dir-perm lintian warning for 2755
I am getting this warning when running lintian (version 2.4.3):
non-standard-dir-perm var/cache/project/ 2775 != 0755
N: The directory has a mode different from 0755, and it's not one of the
N: known exceptions.
N: Refer to Debian Policy Manual section 10.9 (Permissions and
N: Severity: normal, Certainty: possible
However, when I look at the referenced section of the Debian Policy
Manual it says (in part): "Directories should be mode 755 or (for
group-writability) mode 2775."
So why is lintian complaining?