ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/2343] COPY ../../libcxxabi/include/__cxxabi_config.h include/c++/v1/__cxxabi_config.h
[2/2343] COPY ../../libcxxabi/include/cxxabi.h include/c++/v1/cxxabi.h
[3/2343] ACTION //llvm/lib/Transforms/IPO:write_instrumentor_variables(//llvm/utils/gn/build/toolchain:unix)
FAILED: gen/llvm/include/llvm/Transforms/IPO/InstrumentorVariables.inc 
python3 ../../llvm/utils/gn/build/write_cmake_config.py -o gen/llvm/include/llvm/Transforms/IPO/InstrumentorVariables.inc ../../llvm/include/llvm/Transforms/IPO/InstrumentorVariables.inc.in LLVM_INSTRUMENTOR_RUNTIME_HELPER=@file:/usr/local/google/home/thakis/src/llvm-project/out/gn
Traceback (most recent call last):
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 126, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 58, in main
    with open(file_path) as f:
         ~~~~^^^^^^^^^^^
IsADirectoryError: [Errno 21] Is a directory: '/usr/local/google/home/thakis/src/llvm-project/out/gn'
[4/2343] ACTION //libcxx/include:copy_headers(//llvm/utils/gn/build/toolchain:unix)
[5/2343] CXX obj/clang/lib/AST/ByteCode/AST.InterpBlock.o
[6/2343] CXX obj/clang/lib/AST/ByteCode/AST.PrimType.o
[7/2343] CXX obj/clang/lib/AST/ByteCode/AST.InterpStack.o
[8/2343] CXX obj/clang/lib/AST/ByteCode/AST.MemberPointer.o
[9/2343] CXX obj/clang/lib/AST/ByteCode/AST.DynamicAllocator.o
[10/2343] CXX obj/clang/lib/AST/ByteCode/AST.State.o
[11/2343] CXX obj/clang/lib/AST/ByteCode/AST.Function.o
[12/2343] CXX obj/clang/lib/AST/ByteCode/AST.EvaluationResult.o
[13/2343] CXX obj/clang/lib/AST/ByteCode/AST.InterpState.o
[14/2343] CXX obj/clang/lib/AST/ByteCode/AST.Descriptor.o
[15/2343] CXX obj/clang/lib/AST/ByteCode/AST.InterpFrame.o
[16/2343] CXX obj/clang/lib/AST/ByteCode/AST.Program.o
[17/2343] CXX obj/clang/lib/AST/ByteCode/AST.InterpBuiltinBitCast.o
[18/2343] CXX obj/clang/lib/AST/ByteCode/AST.Pointer.o
[19/2343] CXX obj/clang/lib/AST/ByteCode/AST.Context.o
[20/2343] CXX obj/clang/lib/AST/ByteCode/AST.ByteCodeEmitter.o
[21/2343] CXX obj/clang/lib/AST/ByteCode/AST.InterpBuiltin.o
[22/2343] CXX obj/clang/lib/AST/ByteCode/AST.Disasm.o
[23/2343] CXX obj/clang/unittests/AST/ByteCode/InterpTests.Pointer.o
[24/2343] CXX obj/clang/unittests/AST/ByteCode/InterpTests.toAPValue.o
[25/2343] CXX obj/clang/unittests/AST/ByteCode/InterpTests.Descriptor.o
[26/2343] CXX obj/clang/lib/AST/ByteCode/AST.Compiler.o
[27/2343] CXX obj/clang/lib/AST/ByteCode/AST.EvalEmitter.o
[28/2343] CXX obj/clang/lib/AST/AST.ASTContext.o
[29/2343] CXX obj/clang/lib/AST/AST.ExprConstant.o
[30/2343] CXX obj/clang/lib/AST/ByteCode/AST.Interp.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.