Tweak timing.

src/gevent/testing/testcase.py

@@ -64,7 +64,9 @@ class TimeAssertMixin(object):
         start = time()
         yield
         elapsed = time() - start
-        self.assertTimeWithinRange(elapsed, expected - fuzzy, expected + fuzzy)
+        self.assertTrue(
+            expected - fuzzy <= elapsed <= expected + fuzzy,
+            'Expected: %r; elapsed: %r; fuzzy %r' % (expected, elapsed, fuzzy))
 
     def runs_in_no_time(
             self,

src/gevent/tests/test__hub_join_timeout.py

@@ -6,7 +6,8 @@ import gevent.core
 from gevent.event import Event
 
 from gevent.testing.testcase import TimeAssertMixin
-from gevent.testing.timing import SMALL_TICK
+
+SMALL_TICK = 0.05
 
 # setting up signal does not affect join()
 gevent.signal(1, lambda: None)  # wouldn't work on windows