When attempting to install on Debian 9, the following was shown. I just wanted to ask here if this was the expected output.

evan@c32foss:~$ gpg --verify guix-binary-0.14.0.x86_64-linux.tar.xz.sig gpg: assuming signed data in 'guix-binary-0.14.0.x86_64-linux.tar.xz'
gpg: Signature made Thu 07 Dec 2017 03:30:08 AM EST
gpg:                using RSA key 3CE464558A84FDC69DB40CFB090B11993D9AEBB5
gpg: Good signature from "Ludovic Courtès <ludo@gnu.org>" [unknown]
gpg:                 aka "Ludovic Courtès <ludo@chbouib.org>" [unknown]
gpg:                 aka "Ludovic Courtès (Inria) <ludovic.courtes@inria.fr>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 3CE4 6455 8A84 FDC6 9DB4  0CFB 090B 1199 3D9A EBB5