diff -r 8d7bde14d7a4 Lib/test/test_os.py
--- a/Lib/test/test_os.py	Thu Jun 30 11:43:19 2016 -0700
+++ b/Lib/test/test_os.py	Fri Jul 01 02:57:25 2016 +0000
@@ -134,8 +134,9 @@
         finally:
             os.close(second)
         # close a fd that is open, and one that isn't
-        os.closerange(first, first + 2)
-        self.assertRaises(OSError, os.write, first, b"a")
+        with support.SuppressCrashReport():
+            os.closerange(first, first + 2)
+            self.assertRaises(OSError, os.write, first, b"a")
 
     @support.cpython_only
     def test_rename(self):
@@ -422,7 +423,8 @@
             os.close(r)
             os.close(w)
         with self.assertRaises(OSError) as ctx:
-            os.stat(r)
+            with support.SuppressCrashReport():
+                os.stat(r)
         self.assertEqual(ctx.exception.errno, errno.EBADF)
 
     def check_file_attributes(self, result):
@@ -1475,7 +1477,8 @@
 
     def check(self, f, *args):
         try:
-            f(support.make_bad_fd(), *args)
+            with support.SuppressCrashReport():
+                f(support.make_bad_fd(), *args)
         except OSError as e:
             self.assertEqual(e.errno, errno.EBADF)
         else:
@@ -1484,23 +1487,25 @@
 
     @unittest.skipUnless(hasattr(os, 'isatty'), 'test needs os.isatty()')
     def test_isatty(self):
-        self.assertEqual(os.isatty(support.make_bad_fd()), False)
+        with support.SuppressCrashReport():
+            self.assertEqual(os.isatty(support.make_bad_fd()), False)
 
     @unittest.skipUnless(hasattr(os, 'closerange'), 'test needs os.closerange()')
     def test_closerange(self):
         fd = support.make_bad_fd()
         # Make sure none of the descriptors we are about to close are
         # currently valid (issue 6542).
-        for i in range(10):
-            try: os.fstat(fd+i)
-            except OSError:
-                pass
-            else:
-                break
-        if i < 2:
-            raise unittest.SkipTest(
-                "Unable to acquire a range of invalid file descriptors")
-        self.assertEqual(os.closerange(fd, fd + i-1), None)
+        with support.SuppressCrashReport():
+            for i in range(10):
+                try: os.fstat(fd+i)
+                except OSError:
+                    pass
+                else:
+                    break
+            if i < 2:
+                raise unittest.SkipTest(
+                    "Unable to acquire a range of invalid file descriptors")
+            self.assertEqual(os.closerange(fd, fd + i-1), None)
 
     @unittest.skipUnless(hasattr(os, 'dup2'), 'test needs os.dup2()')
     def test_dup2(self):
@@ -2085,7 +2090,8 @@
 
     def test_bad_fd(self):
         # Return None when an fd doesn't actually exist.
-        self.assertIsNone(os.device_encoding(123456))
+        with support.SuppressCrashReport():
+            self.assertIsNone(os.device_encoding(123456))
 
     @unittest.skipUnless(os.isatty(0) and (sys.platform.startswith('win') or
             (hasattr(locale, 'nl_langinfo') and hasattr(locale, 'CODESET'))),