Description of problem: RHEL 7.5 added librabbitmq, so by policy it must be retired from EPEL. Version-Release number of selected component (if applicable): EPEL: librabbitmq-0.5.2-1.el7 RHEL: librabbitmq-0.8.0-2.el7
Already retired. https://src.fedoraproject.org/cgit/rpms/librabbitmq.git/commit/?h=epel7&id=52db5c00ea3d27780266367ae8a2d6b512491cb4