MarsSeed [1] filed a deletion request for ros-noetic-rtabmap-ros [2]: Unused, obsolete. Unmaintained on AUR since 2020.
Upstream is now EOL for ROS1 Noetic. Not compatible with Arch Linux, as this was meant only for the freshly EOL Ubuntu 20.04 LTS and Python 3.9. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-noetic-rtabmap-ros/
