ReplSetTest Could not call ismaster on node 0: Error: socket exception [CONNECT_ERROR] for 127.0.0.1:31000 (127.0.0.1) failed
assert.soon failed: function () {
      master = self.callIsMaster();
      return master;
    }, msg:Finding master
Error: assert.soon failed: function () {
      master = self.callIsMaster();
      return master;
    }, msg:Finding master
    at Error (<anonymous>)
    at doassert (src/mongo/shell/assert.js:11:14)
    at Function.assert.soon (src/mongo/shell/assert.js:180:60)
    at ReplSetTest.getMaster (src/mongo/shell/replsettest.js:374:12)
    at /data/mci/shell/src/jstests/replsets/rollback_cmd_unrollbackable.js:41:19
ReplSetTest getMaster failed: Error: assert.soon failed: function () {
      master = self.callIsMaster();
      return master;
    }, msg:Finding master
Error: Printing Stack Trace
    at printStackTrace (src/mongo/shell/utils.js:49:15)
    at ReplSetTest.getMaster (src/mongo/shell/replsettest.js:381:5)
    at /data/mci/shell/src/jstests/replsets/rollback_cmd_unrollbackable.js:41:19
2014-07-09T15:08:36.050-0400 Error: assert.soon failed: function () {
      master = self.callIsMaster();
      return master;
    }, msg:Finding master
    at Error (<anonymous>)
    at doassert (src/mongo/shell/assert.js:11:14)
    at Function.assert.soon (src/mongo/shell/assert.js:180:60)
    at ReplSetTest.getMaster (src/mongo/shell/replsettest.js:374:12)
    at /data/mci/shell/src/jstests/replsets/rollback_cmd_unrollbackable.js:41:19 at src/mongo/shell/replsettest.js:382
failed to load: /data/mci/shell/src/jstests/replsets/rollback_cmd_unrollbackable.js