src/mongo/db/catalog/database.cpp:532:5: runtime error: member call on null pointer of type 'mongo::OpObserver'
    #0 0x11fa893 in mongo::Database::createCollection(mongo::OperationContext*, mongo::StringData, mongo::CollectionOptions const&, bool) /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/db/catalog/database.cpp:532:5
    #1 0x1562be6 in mongo::update(mongo::OperationContext*, mongo::Database*, mongo::UpdateRequest const&, mongo::OpDebug*) /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/db/ops/update.cpp:99:26
    #2 0x13384c0 in mongo::Helpers::putSingleton(mongo::OperationContext*, char const*, mongo::BSONObj) /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/db/dbhelpers.cpp:259:5
    #3 0x17d25cc in mongo::repl::setMinValid(mongo::OperationContext*, mongo::repl::BatchBoundaries const&) /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/db/repl/minvalid.cpp:109:9
    #4 0x100fd1a in (anonymous namespace)::RSRollbackTest::setUp() /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/db/repl/rs_rollback_test.cpp:164:5
    #5 0x1db5163 in mongo::unittest::Test::run() /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/unittest/unittest.cpp:140:5
    #6 0x10304e0 in void mongo::unittest::Suite::runTestObject<(anonymous namespace)::UnitTest__RSRollbackTest__InconsistentMinValid>() /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/unittest/unittest.h:405:9
    #7 0x1db693d in mongo::unittest::TestHolder::run() const /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/unittest/unittest.h:257:9
    #8 0x1db693d in mongo::unittest::Suite::run(std::string const&, int) /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/unittest/unittest.cpp:263
    #9 0x1db7e07 in mongo::unittest::Suite::run(std::vector<std::string, std::allocator<std::string> > const&, std::string const&, int) /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/unittest/unittest.cpp:321:27
    #10 0x1dbd0f7 in main /home/andrew/Documents/10gen/dev/src/mongodb/src/mongo/unittest/unittest_main.cpp:40:12
    #11 0x7ff47331ba3f in __libc_start_main /build/buildd/glibc-2.21/csu/libc-start.c:289
    #12 0xff70d8 in _start (/home/andrew/Documents/10gen/dev/src/mongodb/build/optdebug/mongo/db/repl/rs_rollback_test+0xff70d8)