ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/3] CXX obj/llvm/lib/CAS/CAS.OnDiskDataAllocator.o
FAILED: obj/llvm/lib/CAS/CAS.OnDiskDataAllocator.o 
../../../chrome/src/third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/llvm/lib/CAS/CAS.OnDiskDataAllocator.o.d -o obj/llvm/lib/CAS/CAS.OnDiskDataAllocator.o -c ../../llvm/lib/CAS/OnDiskDataAllocator.cpp  -I../../llvm/include -Igen/llvm/include -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 -std=c++17 -fvisibility-inlines-hidden -fno-exceptions -fno-rtti
../../llvm/lib/CAS/OnDiskDataAllocator.cpp:212:31: error: no member named 'pointer' in 'llvm::cas::OnDiskDataAllocator'
  212 | Expected<OnDiskDataAllocator::pointer>
      |          ~~~~~~~~~~~~~~~~~~~~~^
../../llvm/lib/CAS/OnDiskDataAllocator.cpp:214:10: error: no viable conversion from returned value of type 'Error' to function return type 'int'
  214 |   return createStringError(make_error_code(std::errc::not_supported),
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  215 |                            "OnDiskDataAllocator is not supported");
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../llvm/lib/CAS/OnDiskDataAllocator.cpp:218:34: error: out-of-line definition of 'beginData' does not match any declaration in 'llvm::cas::OnDiskDataAllocator'
  218 | const char *OnDiskDataAllocator::beginData(FileOffset Offset) const {
      |                                  ^~~~~~~~~
3 errors generated.
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.