00:18:51.176  ========== Backtrace start: ==========
00:18:51.176  
00:18:51.176  in /home/vagrant/spdk_repo/spdk/test/common/autobuild_common.sh:418 -> _unittest_build([])
00:18:51.176       ...
00:18:51.176     413 		esac
00:18:51.176     414 	}
00:18:51.176     415 	
00:18:51.176     416 	_unittest_build() {
00:18:51.176     417 		"$rootdir/configure" $config_params --without-shared
00:18:51.176  => 418 		$MAKE $MAKEFLAGS
00:18:51.176     419 	}
00:18:51.176     420 	
00:18:51.176     421 	autobuild_test_suite() {
00:18:51.176     422 		run_test "autobuild" _autobuild_test_suite
00:18:51.176     423 	}
00:18:51.176       ...
00:18:51.176  in /home/vagrant/spdk_repo/spdk/test/common/autotest_common.sh:1125 -> run_test(["unittest_build"],["_unittest_build"])
00:18:51.176       ...
00:18:51.176     1120		timing_enter $test_name
00:18:51.176     1121		echo "************************************"
00:18:51.176     1122		echo "START TEST $test_name"
00:18:51.176     1123		echo "************************************"
00:18:51.176     1124		xtrace_restore
00:18:51.176     1125		time "$@"
00:18:51.176     1126		xtrace_disable
00:18:51.176     1127		echo "************************************"
00:18:51.176     1128		echo "END TEST $test_name"
00:18:51.176     1129		echo "************************************"
00:18:51.176     1130		timing_exit $test_name
00:18:51.176       ...
00:18:51.176  in /home/vagrant/spdk_repo/spdk/test/common/autobuild_common.sh:426 -> unittest_build([])
00:18:51.176       ...
00:18:51.176     421 	autobuild_test_suite() {
00:18:51.176     422 		run_test "autobuild" _autobuild_test_suite
00:18:51.176     423 	}
00:18:51.176     424 	
00:18:51.176     425 	unittest_build() {
00:18:51.176  => 426 		run_test "unittest_build" _unittest_build
00:18:51.176     427 	}
00:18:51.176     428 	
00:18:51.176     429 	scanbuild_make() {
00:18:51.176     430 		run_test "scanbuild_make" _scanbuild_make
00:18:51.176     431 	}
00:18:51.176       ...
00:18:51.176  in /home/vagrant/spdk_repo/spdk/autobuild.sh:58 -> main(["/home/vagrant/spdk_repo/autorun-spdk.conf"])
00:18:51.176       ...
00:18:51.176     53  	fi
00:18:51.176     54  	
00:18:51.176     55  	if [[ -n $SPDK_TEST_AUTOBUILD ]]; then
00:18:51.176     56  		autobuild_test_suite
00:18:51.176     57  	elif [[ $SPDK_TEST_UNITTEST -eq 1 ]]; then
00:18:51.176  => 58  		unittest_build
00:18:51.176     59  	elif [[ $SPDK_TEST_SCANBUILD -eq 1 ]]; then
00:18:51.176     60  		scanbuild_make
00:18:51.176     61  	else
00:18:51.176     62  		if [[ $SPDK_TEST_FUZZER -eq 1 ]]; then
00:18:51.176     63  			# if we are testing nvmf fuzz with llvm lib, --with-shared will cause lib link fail
00:18:51.176       ...
00:18:51.176  
00:18:51.176  ========== Backtrace end ==========