m30100| Sat Apr 14 22:00:10 Invalid access at address: 0xfa10ab9d080 from thread: conn1
 m30100| 
 m30100| Sat Apr 14 22:00:10 Got signal: 11 (Segmentation fault: 11).
 m30100| 
 m30100| Sat Apr 14 22:00:10 Backtrace:
 m30100| 0x108a50755 0x10810d3ae 0x10810d0c9 0x7fff9736acfa 0x10b418000 0x10887ef17 0x10828fb7d 0x10828fc33 0x1089822d8 0x10821f17e 0x108220f11 0x108222260 0x1083186a5 0x108318f10 0x1087c3d1d 0x1087c8535 0x1081214fb 0x1082952fe 0x108296d30 0x108296d92 
 m30100|  0   mongod                              0x0000000108a50755 _ZN5mongo15printStackTraceERSo + 37
 m30100|  1   mongod                              0x000000010810d3ae _ZN5mongo10abruptQuitEi + 446
 m30100|  2   mongod                              0x000000010810d0c9 _ZN5mongo24abruptQuitWithAddrSignalEiP9__siginfoPv + 537
 m30100|  3   libsystem_c.dylib                   0x00007fff9736acfa _sigtramp + 26
 m30100|  4   ???                                 0x000000010b418000 0x0 + 4483809280
 m30100|  5   mongod                              0x000000010887ef17 _ZNSt8_Rb_treeIN5mongo11BSONElementES1_St9_IdentityIS1_ENS0_26BSONElementCmpWithoutFieldESaIS1_EE9_M_insertEPSt18_Rb_tree_node_baseS8_RKS1_ + 223
 m30100|  6   mongod                              0x000000010828fb7d _ZNSt8_Rb_treeIN5mongo11BSONElementES1_St9_IdentityIS1_ENS0_26BSONElementCmpWithoutFieldESaIS1_EE16_M_insert_uniqueERKS1_ + 677
 m30100|  7   mongod                              0x000000010828fc33 _ZNSt3setIN5mongo11BSONElementENS0_26BSONElementCmpWithoutFieldESaIS1_EE6insertERKS1_ + 35
 m30100|  8   mongod                              0x00000001089822d8 _ZN5mongo15DistinctCommand3runERKSsRNS_7BSONObjEiRSsRNS_14BSONObjBuilderEb + 5076
 m30100|  9   mongod                              0x000000010821f17e _ZN5mongo12_execCommandEPNS_7CommandERKSsRNS_7BSONObjEiRNS_14BSONObjBuilderEb + 142
 m30100|  10  mongod                              0x0000000108220f11 _ZN5mongo11execCommandEPNS_7CommandERNS_6ClientEiPKcRNS_7BSONObjERNS_14BSONObjBuilderEb + 4497
 m30100|  11  mongod                              0x0000000108222260 _ZN5mongo12_runCommandsEPKcRNS_7BSONObjERNS_11_BufBuilderINS_16TrivialAllocatorEEERNS_14BSONObjBuilderEbi + 1472
 m30100|  12  mongod                              0x00000001083186a5 _ZN5mongo11runCommandsEPKcRNS_7BSONObjERNS_5CurOpERNS_11_BufBuilderINS_16TrivialAllocatorEEERNS_14BSONObjBuilderEbi + 117
 m30100|  13  mongod                              0x0000000108318f10 _ZN5mongo8runQueryERNS_7MessageERNS_12QueryMessageERNS_5CurOpES1_ + 1008
 m30100|  14  mongod                              0x00000001087c3d1d _ZN5mongoL13receivedQueryERNS_6ClientERNS_10DbResponseERNS_7MessageE + 349
 m30100|  15  mongod                              0x00000001087c8535 _ZN5mongo16assembleResponseERNS_7MessageERNS_10DbResponseERKNS_11HostAndPortE + 1125
 m30100|  16  mongod                              0x00000001081214fb _ZN5mongo16MyMessageHandler7processERNS_7MessageEPNS_21AbstractMessagingPortEPNS_9LastErrorE + 261
 m30100|  17  mongod                              0x00000001082952fe _ZN5mongo3pms9threadRunEPNS_13MessagingPortE + 1630
 m30100|  18  mongod                              0x0000000108296d30 _ZN5boost3_bi5list1INS0_5valueIPN5mongo13MessagingPortEEEEclIPFvS5_ENS0_5list0EEEvNS0_4typeIvEERT_RT0_i + 78
 m30100|  19  mongod                              0x0000000108296d92 _ZN5boost3_bi6bind_tIvPFvPN5mongo13MessagingPortEENS0_5list1INS0_5valueIS4_EEEEEclEv + 92
 m30100|