diff --git a/Doc/library/collections.abc.rst b/Doc/library/collections.abc.rst
index d341c450d40..fc6bbbfeb6a 100644
--- a/Doc/library/collections.abc.rst
+++ b/Doc/library/collections.abc.rst
@@ -115,7 +115,7 @@ Notes on using :class:`Set` and :class:`MutableSet` as a mixin:
    That assumption is factored-out to an internal classmethod called
    :meth:`_from_iterable` which calls ``cls(iterable)`` to produce a new set.
    If the :class:`Set` mixin is being used in a class with a different
-   constructor signature, you will need to override :meth:`from_iterable`
+   constructor signature, you will need to override :meth:`_from_iterable`
    with a classmethod that can construct new instances from
    an iterable argument.
 
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 99a627dfb5b..2cd8c21bddb 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -1,3 +1,4 @@
+
 :mod:`collections` --- Container datatypes
 ==========================================
 
diff --git a/Lib/test/test_concurrent_futures.py b/Lib/test/test_concurrent_futures.py
index 06cdf0b0e82..f639eec9e5a 100644
--- a/Lib/test/test_concurrent_futures.py
+++ b/Lib/test/test_concurrent_futures.py
@@ -155,7 +155,7 @@ def test_del_shutdown(self):
 class WaitTests(unittest.TestCase):
     def test_first_completed(self):
         future1 = self.executor.submit(mul, 21, 2)
-        future2 = self.executor.submit(time.sleep, 5)
+        future2 = self.executor.submit(time.sleep, 1.5)
 
         done, not_done = futures.wait(
                 [CANCELLED_FUTURE, future1, future2],
@@ -165,7 +165,7 @@ def test_first_completed(self):
         self.assertEqual(set([CANCELLED_FUTURE, future2]), not_done)
 
     def test_first_completed_some_already_completed(self):
-        future1 = self.executor.submit(time.sleep, 2)
+        future1 = self.executor.submit(time.sleep, 1.5)
 
         finished, pending = futures.wait(
                  [CANCELLED_AND_NOTIFIED_FUTURE, SUCCESSFUL_FUTURE, future1],
@@ -178,8 +178,8 @@ def test_first_completed_some_already_completed(self):
 
     def test_first_exception(self):
         future1 = self.executor.submit(mul, 2, 21)
-        future2 = self.executor.submit(sleep_and_raise, 5)
-        future3 = self.executor.submit(time.sleep, 10)
+        future2 = self.executor.submit(sleep_and_raise, 1.5)
+        future3 = self.executor.submit(time.sleep, 3)
 
         finished, pending = futures.wait(
                 [future1, future2, future3],
@@ -190,7 +190,7 @@ def test_first_exception(self):
 
     def test_first_exception_some_already_complete(self):
         future1 = self.executor.submit(divmod, 21, 0)
-        future2 = self.executor.submit(time.sleep, 5)
+        future2 = self.executor.submit(time.sleep, 1.5)
 
         finished, pending = futures.wait(
                 [SUCCESSFUL_FUTURE,
@@ -235,14 +235,14 @@ def test_all_completed(self):
 
     def test_timeout(self):
         future1 = self.executor.submit(mul, 6, 7)
-        future2 = self.executor.submit(time.sleep, 10)
+        future2 = self.executor.submit(time.sleep, 3)
 
         finished, pending = futures.wait(
                 [CANCELLED_AND_NOTIFIED_FUTURE,
                  EXCEPTION_FUTURE,
                  SUCCESSFUL_FUTURE,
                  future1, future2],
-                timeout=5,
+                timeout=1.5,
                 return_when=futures.ALL_COMPLETED)
 
         self.assertEqual(set([CANCELLED_AND_NOTIFIED_FUTURE,
@@ -332,8 +332,8 @@ def test_map_timeout(self):
         results = []
         try:
             for i in self.executor.map(time.sleep,
-                                       [0, 0, 10],
-                                       timeout=5):
+                                       [0, 0, 3],
+                                       timeout=1.5):
                 results.append(i)
         except futures.TimeoutError:
             pass