Tags 944714 +patch Thanks. The easy fix here is to remove -Werror, in the long term of course migration to a non-deprecated type should be considered but that is IMO an issue for upstream not Debian.
I have tested said change and uploaded to raspbian, a debdiff sould appear soon at https://debdiffs.raspbian.org/main/m/moonshot-trust-router/ No intent to NMU in Debian.