Drupal module warning: dgu_reply

[davidread]

Recently we've seen warnings appear when enabling the dgu_reply module.
e.g.

Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "delete field_comment reply".

Are these benign? Or do they need addressing?

The full output from the command is:

(ckan)co@precise64:/var/www/drupal/dgu$ drush --yes en dgu_site_feature
The following extensions will be enabled: dgu_site_feature, smart_trim, libraries, quickedit, panels_mini, fieldable_panels_panes, emptyparagraphkiller, dgu_shared_fields, dgu_reply, context, jquery_update, bootstrap_tour
Do you really want to continue? (y/n): y
bootstrap_tour was enabled successfully.                       [ok]
bootstrap_tour defines the following permissions: administer bootstrap tours
context was enabled successfully.                              [ok]
dgu_reply was enabled successfully.                            [ok]
dgu_shared_fields was enabled successfully.                    [ok]
dgu_site_feature was enabled successfully.                     [ok]
emptyparagraphkiller was enabled successfully.                 [ok]
fieldable_panels_panes was enabled successfully.               [ok]
fieldable_panels_panes defines the following permissions: administer fieldable panels panes, create fieldable fieldable_panels_pane, edit fieldable fieldable_panels_pane, delete fieldable fieldable_panels_pane, create fieldable tile_big, edit fieldable tile_big, delete fieldable tile_big, create fieldable tile_small, edit fieldable tile_small, delete fieldable tile_small, create fieldable tile_text_big, edit fieldable tile_text_big, delete fieldable tile_text_big, create fieldable tile_text_small, edit fieldable tile_text_small, delete fieldable tile_text_small
jquery_update was enabled successfully.                        [ok]
libraries was enabled successfully.                            [ok]
panels_mini was enabled successfully.                          [ok]
panels_mini defines the following permissions: create mini panels, administer mini panels
quickedit was enabled successfully.                            [ok]
quickedit defines the following permissions: access in-place editing
smart_trim was enabled successfully.                           [ok]
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "delete field_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "delete own field_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "delete own review_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "delete review_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "edit field_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "edit own field_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "edit own review_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "edit review_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "post field_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "post review_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "view field_comment reply".
Warning in features rebuild of dgu_reply. No module defines    [warning]
permission "view review_comment reply".