@Laurent you simply should not be using apt-key and key servers and key ids. You should use keyfiles that you drop in trusted.gpg.d. I think we should kill APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE.
Anyhow, apt-key now tells dirmngr to exit in bionic and newer, bug 1773992.
@Laurent you simply should not be using apt-key and key servers and key ids. You should use keyfiles that you drop in trusted.gpg.d. I think we should kill APT_KEY_ DONT_WARN_ ON_DANGEROUS_ USAGE.
Anyhow, apt-key now tells dirmngr to exit in bionic and newer, bug 1773992.