Skip the sigterm cleanup tests on Python 3.8 since multiprocessing is…

… buggy there.

tests/test_pytest_cov.py

@@ -1018,6 +1018,7 @@ def test_funcarg_not_active(testdir):
 @pytest.mark.skipif("sys.version_info[0] < 3", reason="no context manager api on Python 2")
 @pytest.mark.skipif('sys.platform == "win32"', reason="multiprocessing support is broken on Windows")
 @pytest.mark.skipif('platform.python_implementation() == "PyPy"', reason="often deadlocks on PyPy")
+@pytest.mark.skipif('sys.version_info[:2] == (3, 8)', reason="deadlocks on Python 3.8, see: https://bugs.python.org/issue38227")
 def test_multiprocessing_pool(testdir):
     pytest.importorskip('multiprocessing.util')
 
@@ -1058,6 +1059,7 @@ def test_run_target():
 
 @pytest.mark.skipif('sys.platform == "win32"', reason="multiprocessing support is broken on Windows")
 @pytest.mark.skipif('platform.python_implementation() == "PyPy"', reason="often deadlocks on PyPy")
+@pytest.mark.skipif('sys.version_info[:2] == (3, 8)', reason="deadlocks on Python 3.8, see: https://bugs.python.org/issue38227")
 def test_multiprocessing_pool_terminate(testdir):
     pytest.importorskip('multiprocessing.util')