DRIVERS-2877 : Summary of necessary driver changes Sync command logging and monitoring tests for unacknowledged writes. Note that these might be the first logging tests that utilize ignoreExtraMessages , so that test runner feature may need to be implemented before being able to run the updated logging test. Implementation should be similar to existing ignoreExtraEvents . Commits for syncing spec/prose tests   https://github.com/mongodb/specifications/commit/cd08b7248eb4e3ab901a8f7905874da41b908f7c Context for other referenced/linked tickets Complete alongside DRIVERS-2921 if possible. Notes Syncing these tests should be considered low priority unless you're seeing similar failures to the ones described in the ticket description.