SERVER-45869 appears to have broken unittest building with --opt=off, specifically the changes to src/mongo/unittest/benchmark_main.cpp:
214/714 ( 29%) 3.655s] SHCXX build/ninja/mongo/unittest/benchmark_main.dyn.o FAILED: build/ninja/mongo/unittest/benchmark_main.dyn.o ... src/mongo/unittest/benchmark_main.cpp:57:5: error: use of undeclared identifier 'logv2'; did you mean 'mongo::logv2'? LOGV2(23049, ^ src/mongo/logv2/log.h:86:5: note: expanded from macro 'LOGV2' LOGV2_IMPL(ID, \ ^ src/mongo/logv2/log.h:83:5: note: expanded from macro 'LOGV2_IMPL' logv2::detail::doLog(ID, SEVERITY, OPTIONS, FMT_STRING(MESSAGE), ##__VA_ARGS__) ^ src/mongo/logv2/log_detail.h:42:11: note: 'mongo::logv2' declared here namespace logv2 { ^ 1 error generated.