[Trisquel-users] Re : Testing The Trisquel 8 Upgrade Process

[lcerf]

About the GPG, it does not look like APT knows about it.  Executing the  
following command in a terminal will import it:
$ apt-key adv --fetch-keys  
http://jenkins.trisquel.info/archive/trisquel/trisquel-archive-signkey.gpg

That said, you only show warnings.  Contrary to errors, warning do not stop  
the execution.