m30999| Fri Jul 13 09:36:06 [conn1]   Assertion failure !e.eoo() src/mongo/s/../util/net/../../db/../bson/bsonobjbuilder.h 131
 m30999| Fri Jul 13 09:36:06 [conn1] ERROR: Future::spawnComand (part 2) exception:  :: caused by :: Error running command on server: localhost:30001
 m30999|  0   mongos                              0x000000010001447b _ZN5mongo15printStackTraceERSo + 43
 m30999|  1   mongos                              0x0000000100018919 _ZN5mongo12verifyFailedEPKcS1_j + 313
 m30999|  2   mongos                              0x00000001002ce55d _ZN5mongo15dbgrid_pub_cmds21RunOnAllShardsCommand3runERKSsRNS_7BSONObjEiRSsRNS_14BSONObjBuilderEb + 3389
 m30999|  3   mongos                              0x00000001002bbb0c _ZN5mongo7Command20runAgainstRegisteredEPKcRNS_7BSONObjERNS_14BSONObjBuilderEi + 1916
 m30999| 0x10001447b 0x100018919 0x1002ce55d 0x1002bbb0c 0x100420bf0 0x100233607 0x1002fd5fa 0x10003aecd 0x100050e2c 0x1002e9d93 0x7fff8a34efd6 0x7fff8a34ee89 
 m30999|  4   mongos                              0x0000000100420bf0 _ZN5mongo14SingleStrategy7queryOpERNS_7RequestE + 1376
 m30999|  5   mongos                              0x0000000100233607 _ZN5mongo13ShardStrategy7queryOpERNS_7RequestE + 2407
 m30999|  6   mongos                              0x00000001002fd5fa _ZN5mongo7Request7processEi + 474
 m30999|  7   mongos                              0x000000010003aecd _ZN5mongo21ShardedMessageHandler7processERNS_7MessageEPNS_21AbstractMessagingPortEPNS_9LastErrorE + 109
 m30999|  8   mongos                              0x0000000100050e2c _ZN5mongo3pms9threadRunEPNS_13MessagingPortE + 1084
 m30999|  10  libSystem.B.dylib                   0x00007fff8a34efd6 _pthread_start + 331
 m30999|  9   mongos                              0x00000001002e9d93 thread_proxy + 163
 m30999|  11  libSystem.B.dylib                   0x00007fff8a34ee89 thread_start + 13