std::cout << "nFindSuccess=" << nFindSuccess << ", nInsertedNum="
<< nInsertedNum << std::endl;
std::cout << "[ FAILED ] " << kTestName << "." << bench_name
std::cout << "nFindSuccess=" << nFindSuccess << ", nInsertedNum="
<< nInsertedNum << std::endl;
std::cout << "[ FAILED ] " << kTestName << "." << bench_name