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[8/138] ACTION //compiler-rt/test:lit_common_configured(//llvm/utils/gn/build/toolchain:stage2_unix)
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[22/134] SOLINK lib/clang/19/lib/linux/libclang_rt.ubsan_standalone-x86_64.so
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FAILED: stage2_unix/obj/libcxx/src/cxx_experimental.time_zone.o 
./bin/clang++ -MMD -MF stage2_unix/obj/libcxx/src/cxx_experimental.time_zone.o.d -o stage2_unix/obj/libcxx/src/cxx_experimental.time_zone.o -c ../../libcxx/src/time_zone.cpp -D_LIBCPP_BUILDING_LIBRARY -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -DLIBCXX_BUILDING_LIBCXXABI -I../../llvm/include -Istage2_unix/gen/llvm/include -I../../libcxxabi/include -Iinclude/c++/v1 -O3 -fdiagnostics-color -Wall -Wextra -Wno-unused-parameter -Wdelete-non-virtual-dtor -Wstring-conversion -no-canonical-prefixes -Werror=date-time -fdebug-compilation-dir=. --sysroot=../../sysroot -Wpoison-system-directories -fPIC -Wcovered-switch-default -Wall -Wextra -W -Wwrite-strings -Wno-unused-parameter -Wno-long-long -Werror=return-type -Wextra-semi -Wno-user-defined-literals -Wno-covered-switch-default -std=c++17 -fvisibility-inlines-hidden -std=c++20 -nostdinc++
../../libcxx/src/time_zone.cpp:35:10: fatal error: 'expected' file not found
   35 | #include <expected>
      |          ^~~~~~~~~~
1 error generated.
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ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.