ninja: Entering directory `out/gn'
[1/7] COPY ../../libcxx/include/__condition_variable/condition_variable.h include/c++/v1/__condition_variable/condition_variable.h
[2/7] COPY ../../libcxx/include/__mutex/mutex.h include/c++/v1/__mutex/mutex.h
[3/7] COPY ../../libcxx/include/__thread/thread.h include/c++/v1/__thread/thread.h
[4/7] COPY ../../libcxx/include/barrier include/c++/v1/barrier
[5/7] COPY ../../libcxx/include/latch include/c++/v1/latch
[6/7] COPY ../../libcxx/include/semaphore include/c++/v1/semaphore
[7/7] COPY ../../libcxx/include/mutex include/c++/v1/mutex