2015-01-03T20:08:31.312-0500 I -        [conn1] Invariant failure i != _collections.end() src/mongo/db/storage/mmap_v1/mmap_v1_database_catalog_entry.cpp 841

#0  0x00007ffff7bcc20b in raise (sig=5) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
#1  0x00000000018a6003 in mongo::mongo_breakpoint () at src/mongo/util/debug_util.cpp:58
#2  0x000000000189c7f8 in mongo::breakpoint () at src/mongo/util/debug_util.h:73
#3  0x000000000189b5b8 in mongo::invariantFailed (expr=0x1fed027 "i != _collections.end()", file=0x1fecce8 "src/mongo/db/storage/mmap_v1/mmap_v1_database_catalog_entry.cpp", line=841)
    at src/mongo/util/assert_util.cpp:146
#4  0x00000000016eaef0 in mongo::MMAPV1DatabaseCatalogEntry::_getNamespaceRecordStore_inlock (this=0x6d88000) at src/mongo/db/storage/mmap_v1/mmap_v1_database_catalog_entry.cpp:841
#5  0x00000000016eb114 in mongo::MMAPV1DatabaseCatalogEntry::_addNamespaceToNamespaceCollection_inlock (this=0x6d88000, txn=0x7ffff7fcb7b0, ns=..., options=0x7ffff7fc8440)
    at src/mongo/db/storage/mmap_v1/mmap_v1_database_catalog_entry.cpp:866
#6  0x00000000016eaf8d in mongo::MMAPV1DatabaseCatalogEntry::_addNamespaceToNamespaceCollection (this=0x6d88000, txn=0x7ffff7fcb7b0, ns=..., options=0x7ffff7fc8440)
    at src/mongo/db/storage/mmap_v1/mmap_v1_database_catalog_entry.cpp:849
#7  0x00000000016e98aa in mongo::MMAPV1DatabaseCatalogEntry::createCollection (this=0x6d88000, txn=0x7ffff7fcb7b0, ns=..., options=..., allocateDefaultSpace=true)
    at src/mongo/db/storage/mmap_v1/mmap_v1_database_catalog_entry.cpp:631
#8  0x0000000001261518 in mongo::Database::createCollection (this=0x33c4230, txn=0x7ffff7fcb7b0, ns=..., options=..., allocateDefaultSpace=true, createIdIndex=true) at src/mongo/db/catalog/database.cpp:509
#9  0x000000000130146b in mongo::WriteBatchExecutor::ExecInsertsState::_lockAndCheckImpl (this=0x7ffff7fc9e20, result=0x7ffff7fc8990, intentLock=false)
    at src/mongo/db/commands/write_commands/batch_executor.cpp:1008
#10 0x00000000013013d6 in mongo::WriteBatchExecutor::ExecInsertsState::_lockAndCheckImpl (this=0x7ffff7fc9e20, result=0x7ffff7fc8990, intentLock=true)
    at src/mongo/db/commands/write_commands/batch_executor.cpp:1003
#11 0x000000000130188c in mongo::WriteBatchExecutor::ExecInsertsState::lockAndCheck (this=0x7ffff7fc9e20, result=0x7ffff7fc8990) at src/mongo/db/commands/write_commands/batch_executor.cpp:1026
#12 0x0000000001301a2b in mongo::insertOne (state=0x7ffff7fc9e20, result=0x7ffff7fc8990) at src/mongo/db/commands/write_commands/batch_executor.cpp:1054
#13 0x0000000001301cb5 in mongo::WriteBatchExecutor::execOneInsert (this=0x7ffff7fca230, state=0x7ffff7fc9e20, error=0x7ffff7fc9df8) at src/mongo/db/commands/write_commands/batch_executor.cpp:1083
#14 0x00000000013006a4 in mongo::WriteBatchExecutor::execInserts (this=0x7ffff7fca230, request=..., errors=0x7ffff7fca0b0) at src/mongo/db/commands/write_commands/batch_executor.cpp:874
#15 0x0000000001300117 in mongo::WriteBatchExecutor::bulkExecute (this=0x7ffff7fca230, request=..., upsertedIds=0x7ffff7fca0d0, errors=0x7ffff7fca0b0)
    at src/mongo/db/commands/write_commands/batch_executor.cpp:756
#16 0x00000000012fe11b in mongo::WriteBatchExecutor::executeBatch (this=0x7ffff7fca230, request=..., response=0x7ffff7fca270) at src/mongo/db/commands/write_commands/batch_executor.cpp:265
#17 0x0000000001307eb4 in mongo::WriteCmd::run (this=0x30f9410, txn=0x7ffff7fcb7b0, dbName=..., cmdObj=..., options=0, errMsg=..., result=..., fromRepl=false)
    at src/mongo/db/commands/write_commands/write_commands.cpp:144
#18 0x0000000001323415 in mongo::_execCommand (txn=0x7ffff7fcb7b0, c=0x30f9410, dbname=..., cmdObj=..., queryOptions=0, errmsg=..., result=..., fromRepl=false) at src/mongo/db/dbcommands.cpp:1256
#19 0x0000000001324392 in mongo::Command::execCommand (txn=0x7ffff7fcb7b0, c=0x30f9410, queryOptions=0, cmdns=0x33ba414 "test.$cmd", cmdObj=..., result=..., fromRepl=false)
    at src/mongo/db/dbcommands.cpp:1472
#20 0x0000000001324c74 in mongo::_runCommands (txn=0x7ffff7fcb7b0, ns=0x33ba414 "test.$cmd", _cmdobj=..., b=..., anObjBuilder=..., fromRepl=false, queryOptions=0) at src/mongo/db/dbcommands.cpp:1547
#21 0x00000000015272b4 in mongo::runCommands (txn=0x7ffff7fcb7b0, ns=0x33ba414 "test.$cmd", jsobj=..., curop=..., b=..., anObjBuilder=..., fromRepl=false, queryOptions=0) at src/mongo/db/query/find.cpp:131
#22 0x0000000001529040 in mongo::runQuery (txn=0x7ffff7fcb7b0, m=..., q=..., curop=..., result=..., fromDBDirectClient=false) at src/mongo/db/query/find.cpp:565
#23 0x000000000142f0ed in mongo::receivedQuery (txn=0x7ffff7fcb7b0, c=..., dbresponse=..., m=..., fromDBDirectClient=false) at src/mongo/db/instance.cpp:224
#24 0x00000000014301ff in mongo::assembleResponse (txn=0x7ffff7fcb7b0, m=..., dbresponse=..., remote=..., fromDBDirectClient=false) at src/mongo/db/instance.cpp:394
#25 0x000000000113310a in mongo::MyMessageHandler::process (this=0x307c1e8, m=..., port=0x30aa5d0, le=0x33c41e0) at src/mongo/db/db.cpp:195
#26 0x00000000018c3949 in mongo::PortMessageServer::handleIncomingMsg (arg=0x30942b0) at src/mongo/util/net/message_server_port.cpp:234
#27 0x00007ffff7bc4182 in start_thread (arg=0x7ffff7fcc700) at pthread_create.c:312
#28 0x00007ffff6cc4efd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111