[gentoo-user] Untrusted PGP signing key

[Consus]

Hi guys,

I've got this today:

        $ sudo emerge --sync
        >>> Syncing repository 'gentoo' into '/var/db/repos/gentoo'...
         * Using keys from /usr/share/openpgp-keys/gentoo-release.asc
         * Refreshing keys via WKD ... [ ok ]
        Fetching most recent snapshot ...
        Trying to retrieve 20200523 snapshot from 
https://mirror.yandex.ru/gentoo-distfiles ...
        Fetching file gentoo-20200523.tar.xz.md5sum ...
        Fetching file gentoo-20200523.tar.xz.gpgsig ...
        Fetching file gentoo-20200523.tar.xz ...
        Checking digest ...
        Checking signature ...
        gpg: Signature made Sun 24 May 2020 03:56:07 MSK
        gpg:                using RSA key 
E1D6ABB63BFCFB4BA02FDF1CEC590EEAC9189250
        gpg: Good signature from "Gentoo ebuild repository signing key 
(Automated Signing Key) <infrastruct...@gentoo.org>" [unknown]
        gpg:                 aka "Gentoo Portage Snapshot Signing Key 
(Automated Signing Key)" [unknown]
        gpg: WARNING: Using untrusted key!
        ...

Is this warning expected?