3/21 Test #11: dispatch_sema ....................***Failed    0.10 sec
[FAIL] Process exited (bsdtestharness.c:161)
 5/21 Test  #6: dispatch_context_for_key .........***Failed    0.10 sec
[FAIL] Process exited (bsdtestharness.c:161)
 7/21 Test #16: dispatch_io_muxed ................***Failed    0.10 sec
[FAIL] Process exited (bsdtestharness.c:161)
11/21 Test  #9: dispatch_timer_short .............***Failed    0.16 sec
[FAIL] Process exited (bsdtestharness.c:161)
The following tests FAILED:
	  6 - dispatch_context_for_key (Failed)
	  9 - dispatch_timer_short (Failed)
	 11 - dispatch_sema (Failed)
	 16 - dispatch_io_muxed (Failed)
Errors while running CTest
>>> ERROR: libdispatch: check failed