[arch-general] namcap.log in clean chroot

I have install namcap to my clean chroot and it gives me this error: Error: Problem reading *.pkg.tar.gz usage: /usr/bin/namcap [-r rulelist | --rules=rulelist] [-i | --info] package .. -r list : returns list of available rules -i : prints information responses from rules Is there anything extra I need to do to get namcap working in clean chroot?