assert.soon failed: function () {
          replTest.getMaster(); // Reload who the current slaves are.
          var slaves = replTest.liveNodes.slaves;
          var len = slaves.length;
          var ready = true;
          for(var i=0; i<len; i++) {
              var isMaster = slaves[i].getDB("admin").runCommand({ismaster: 1});
              var arbiter = isMaster['arbiterOnly'] == undefined ? false : isMaster['arbiterOnly'];
              ready = ready && ( isMaster['secondary'] || arbiter );
          }
          return ready;
      }, msg:Awaiting secondaries
Error: Printing Stack Trace
    at printStackTrace (src/mongo/shell/utils.js:38:15)
    at doassert (src/mongo/shell/assert.js:6:5)
    at Function.assert.soon (src/mongo/shell/assert.js:174:60)
    at ReplSetTest.awaitSecondaryNodes (src/mongo/shell/replsettest.js:387:10)
    at ReplSetTest.initiate (src/mongo/shell/replsettest.js:487:10)
    at D:\data\mci\git@github.commongodb\mongo.git\master\jstests\slowWeekly\rollback4.js:7:18