FIX: TZ aware crashed the history check.

                if channel.permissions_for(member).read_messages and member not in all_members:

                    all_members += [member]

        after = datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(days=self.args.days)

        after = datetime.datetime.utcnow() - datetime.timedelta(days=self.args.days)

        last_msgs = {}

        for channel in self.msg.channel_mentions:

            try:

                raise cog.exc.InvalidCommandArgs("Bot has no permissions for channel: " + channel.name) from exc

        for msg in last_msgs.values():

            try:

                all_members.remove(msg.author)

            except ValueError:

                pass

        all_members = sorted(all_members, key=lambda x: x.name.lower())

        all_members = sorted(all_members, key=lambda x: x.top_role.name)