The monkey test runner needs to handle SkipTest exceptions.

src/gevent/testing/monkey_test.py

@@ -23,6 +23,7 @@ from .sysinfo import PY37
 from .patched_tests_setup import disable_tests_in_source
 from . import support
 from . import resources
+from . import SkipTest
 
 if RUNNING_ON_APPVEYOR and PY37:
     # 3.7 added a stricter mode for thread cleanup.
@@ -73,5 +74,14 @@ try:
                           'exec',
                           dont_inherit=True)
     exec(module_code, globals())
+except SkipTest as e:
+    # Some tests can raise test.support.ResourceDenied
+    # in their main method before the testrunner takes over.
+    # That's a kind of SkipTest. we can't get  a skip count because it
+    # hasn't run, though.
+    print(e)
+    # Match the regular unittest output, including ending with skipped
+    print("Ran 0 tests in 0.0s")
+    print('OK (skipped=0)')
 finally:
     os.remove(temp_path)

src/gevent/testing/testrunner.py

@@ -97,6 +97,11 @@ class Runner(object):
                  failfast=False,
                  quiet=False,
                  configured_run_alone_tests=()):
+        """
+        :keyword quiet: Set to True or False to explicitly choose. Set to
+            `None` to use the default, which may come from the environment variable
+            ``GEVENTTEST_QUIET``.
+        """
         self._tests = tests
         self._configured_failing_tests = configured_failing_tests
         self._failfast = failfast
@@ -110,6 +115,7 @@ class Runner(object):
         self._worker_count = min(len(tests), NWORKERS) or 1
 
     def _run_one(self, cmd, **kwargs):
+        if self._quiet is not None:
             kwargs['quiet'] = self._quiet
         result = util.run(cmd, **kwargs)
         if not result and self._failfast:

src/gevent/tests/test___monkey_patching.py

@@ -106,7 +106,9 @@ def TESTRUNNER(tests=None):
 
 def main():
     from gevent.testing import testrunner
-    return testrunner.Runner(list(TESTRUNNER(sys.argv[1:])))()
+    discovered_tests = TESTRUNNER(sys.argv[1:])
+    discovered_tests = list(discovered_tests)
+    return testrunner.Runner(discovered_tests, quiet=None)()
 
 
 if __name__ == '__main__':