The rollback_after_enabling_majority_reads.js test runs a final rollback here after restarting node 0 with EMRC=true. It intends for the rollback to occur on node 0, but since node 0 is a SECONDARY at the time it is restarted with EMRC=true, the RollbackTest fixture will end up running the rollback on node 1. We should consider shutting down and restarting node 1 to let node 0 become primary again before initiating the final rollback sequence.