initial_sync3.js failed on Linux 64-bit DEBUG, Linux 64-bit DEBUG DUR OFF

initial_sync3.js failed in:

535665987c26 Linux 64-bit DEBUG replicasets (logfile)
535665987c26 Linux 64-bit DEBUG DUR OFF replicasets (logfile)

Both failed similarly, took 2 minutes to fail:

assert.soon failed: function () {

      master = self.callIsMaster();

      return master;

    }, msg:Finding master

Earlier failures are visible:

50682334073f Linux 64-bit DEBUG DUR OFF replicasets
24b6d27d9a00 Linux 64-bit DEBUG DUR OFF replicasets

Last green at
0ffa31cb9e1f Linux 64-bit DEBUG DUR OFF replicasets