This solves for the case of `gpg --recv-keys` receiving enough valid data that it doesn't return a non-zero exit code, but that it also doesn't import a key by explicitly checking afterwards that it did import the key we asked for (so that the fallback to keyserver.ubuntu.com actually happens appropriately for keys whose UID are no longer validated on keys.openpgp.org).
Tianon Gravi
KobayashiAzusa
Mohamed EL-Habib
Jesper Noordsij
Nick Schonning
Simen Bekkhus
Laurent Goderre