MarsSeed [1] filed a deletion request for librdkafka1 [2]: Legacy version pkg; not needed anymore. Conflicts with repo's librdkafka and declares it provides librdkafka. This is not practical and also does not conform to AUR submission guidelines.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/librdkafka1/
