> Any details on those? They don't fail for me.

Here you are.

$ ./python Lib/test/test_cProfile.py

         121 function calls (101 primitive calls) in 1.000 CPU seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        1    0.000    0.000    1.000    1.000 <string>:1(<module>)
        8    0.064    0.008    0.080    0.010
test_cProfile.py:103(subhelper)
       28    0.028    0.001    0.028    0.001
test_cProfile.py:115(__getattr__)
        1    0.270    0.270    1.000    1.000 test_cProfile.py:30(testfunc)
     23/3    0.150    0.007    0.170    0.057 test_cProfile.py:40(factorial)
       20    0.020    0.001    0.020    0.001 test_cProfile.py:53(mul)
        2    0.040    0.020    0.600    0.300 test_cProfile.py:60(helper)
        4    0.116    0.029    0.120    0.030 test_cProfile.py:78(helper1)
        2    0.000    0.000    0.140    0.070
test_cProfile.py:89(helper2_indirect)
        8    0.312    0.039    0.400    0.050 test_cProfile.py:93(helper2)
        1    0.000    0.000    0.000    0.000 utf_8.py:15(decode)
        1    0.000    0.000    0.000    0.000 {_codecs.utf_8_decode}
        1    0.000    0.000    1.000    1.000 {exec}
       12    0.000    0.000    0.012    0.001 {hasattr}
        4    0.000    0.000    0.000    0.000 {method 'append' of 'list'
objects}
        1    0.000    0.000    0.000    0.000 {method 'disable' of
'_lsprof.Profiler' objects}
        4    0.000    0.000    0.000    0.000 {sys.exc_info}

   Ordered by: standard name

Function                                          called...
                                                      ncalls  tottime
cumtime
<string>:1(<module>)                              ->       1    0.270
 1.000  test_cProfile.py:30(testfunc)
test_cProfile.py:103(subhelper)                   ->      16    0.016
 0.016  test_cProfile.py:115(__getattr__)
test_cProfile.py:115(__getattr__)                 ->
test_cProfile.py:30(testfunc)                     ->       1    0.014
 0.130  test_cProfile.py:40(factorial)
                                                           2    0.040
 0.600  test_cProfile.py:60(helper)
test_cProfile.py:40(factorial)                    ->    20/3    0.130
 0.147  test_cProfile.py:40(factorial)
                                                          20    0.020
 0.020  test_cProfile.py:53(mul)
test_cProfile.py:53(mul)                          ->
test_cProfile.py:60(helper)                       ->       4    0.116
 0.120  test_cProfile.py:78(helper1)
                                                           2    0.000
 0.140  test_cProfile.py:89(helper2_indirect)
                                                           6    0.234
 0.300  test_cProfile.py:93(helper2)
test_cProfile.py:78(helper1)                      ->       4    0.000
 0.004  {hasattr}
                                                           4    0.000
 0.000  {method 'append' of 'list' objects}
                                                           4    0.000
 0.000  {sys.exc_info}
test_cProfile.py:89(helper2_indirect)             ->       2    0.006
 0.040  test_cProfile.py:40(factorial)
                                                           2    0.078
 0.100  test_cProfile.py:93(helper2)
test_cProfile.py:93(helper2)                      ->       8    0.064
 0.080  test_cProfile.py:103(subhelper)
                                                           8    0.000
 0.008  {hasattr}
utf_8.py:15(decode)                               ->       1    0.000
 0.000  {_codecs.utf_8_decode}
{_codecs.utf_8_decode}                            ->
{exec}                                            ->       1    0.000
 1.000  <string>:1(<module>)
                                                           1    0.000
 0.000  utf_8.py:15(decode)
{hasattr}                                         ->      12    0.012
 0.012  test_cProfile.py:115(__getattr__)
{method 'append' of 'list' objects}               ->
{method 'disable' of '_lsprof.Profiler' objects}  ->
{sys.exc_info}                                    ->

   Ordered by: standard name

Function                                          was called by...
                                                      ncalls  tottime
cumtime
<string>:1(<module>)                              <-       1    0.000
 1.000  {exec}
test_cProfile.py:103(subhelper)                   <-       8    0.064
 0.080  test_cProfile.py:93(helper2)
test_cProfile.py:115(__getattr__)                 <-      16    0.016
 0.016  test_cProfile.py:103(subhelper)
                                                          12    0.012
 0.012  {hasattr}
test_cProfile.py:30(testfunc)                     <-       1    0.270
 1.000  <string>:1(<module>)
test_cProfile.py:40(factorial)                    <-       1    0.014
 0.130  test_cProfile.py:30(testfunc)
                                                        20/3    0.130
 0.147  test_cProfile.py:40(factorial)
                                                           2    0.006
 0.040  test_cProfile.py:89(helper2_indirect)
test_cProfile.py:53(mul)                          <-      20    0.020
 0.020  test_cProfile.py:40(factorial)
test_cProfile.py:60(helper)                       <-       2    0.040
 0.600  test_cProfile.py:30(testfunc)
test_cProfile.py:78(helper1)                      <-       4    0.116
 0.120  test_cProfile.py:60(helper)
test_cProfile.py:89(helper2_indirect)             <-       2    0.000
 0.140  test_cProfile.py:60(helper)
test_cProfile.py:93(helper2)                      <-       6    0.234
 0.300  test_cProfile.py:60(helper)
                                                           2    0.078
 0.100  test_cProfile.py:89(helper2_indirect)
utf_8.py:15(decode)                               <-       1    0.000
 0.000  {exec}
{_codecs.utf_8_decode}                            <-       1    0.000
 0.000  utf_8.py:15(decode)
{exec}                                            <-
{hasattr}                                         <-       4    0.000
 0.004  test_cProfile.py:78(helper1)
                                                           8    0.000
 0.008  test_cProfile.py:93(helper2)
{method 'append' of 'list' objects}               <-       4    0.000
 0.000  test_cProfile.py:78(helper1)
{method 'disable' of '_lsprof.Profiler' objects}  <-
{sys.exc_info}                                    <-       4    0.000
 0.000  test_cProfile.py:78(helper1)

####################################
$ ./python Lib/test/test_doctest.py

doctest (doctest) ... 66 tests with zero failures
**********************************************************************
File "/home/heimes/dev/python/py3k/Lib/test/test_doctest.py", line 1570,
in test.test_doctest.test_debug
Failed example:
    try: doctest.debug_src(s)
    finally: sys.stdin = real_stdin
Expected:
    > <string>(1)<module>()
    (Pdb) next
    12
    --Return--
    > <string>(1)<module>()->None
    (Pdb) print(x)
    12
    (Pdb) continue
Got:
    > /home/heimes/dev/python/py3k/Lib/encodings/utf_8.py(16)decode()
    -> return codecs.utf_8_decode(input, errors, True)
    (Pdb) next
    --Return--
    >
/home/heimes/dev/python/py3k/Lib/encodings/utf_8.py(16)decode()->('<string>',
8)
    -> return codecs.utf_8_decode(input, errors, True)
    (Pdb) print(x)
    *** NameError: NameError("name 'x' is not defined",)
    (Pdb) continue
    12
**********************************************************************
1 items had failures:
   1 of   4 in test.test_doctest.test_debug
***Test Failed*** 1 failures.
Traceback (most recent call last):
  File "Lib/test/test_doctest.py", line 2422, in <module>
    test_main()
  File "Lib/test/test_doctest.py", line 2406, in test_main
    test_support.run_doctest(test_doctest, verbosity=True)
  File "/home/heimes/dev/python/py3k/Lib/test/test_support.py", line
569, in run_doctest
    raise TestFailed("%d of %d doctests failed" % (f, t))
test.test_support.TestFailed: 1 of 414 doctests failed

####################################
$ ./python Lib/test/test_email.py

Traceback (most recent call last):
  File "Lib/test/test_email.py", line 13, in <module>
    test_main()
  File "Lib/test/test_email.py", line 10, in test_main
    test_support.run_unittest(suite())
  File "/home/heimes/dev/python/py3k/Lib/test/test_support.py", line
541, in run_unittest
    _run_suite(suite)
  File "/home/heimes/dev/python/py3k/Lib/test/test_support.py", line
524, in _run_suite
    raise TestFailed(err)
test.test_support.TestFailed: Traceback (most recent call last):
  File "/home/heimes/dev/python/py3k/Lib/email/test/test_email.py", line
1445, in test_same_boundary_inner_outer
    msg = self._msgobj('msg_15.txt')
  File "/home/heimes/dev/python/py3k/Lib/email/test/test_email.py", line
67, in _msgobj
    return email.message_from_file(fp)
  File "/home/heimes/dev/python/py3k/Lib/email/__init__.py", line 46, in
message_from_file
    return Parser(*args, **kws).parse(fp)
  File "/home/heimes/dev/python/py3k/Lib/email/parser.py", line 68, in parse
    data = fp.read(8192)
  File "/home/heimes/dev/python/py3k/Lib/io.py", line 1240, in read
    readahead, pending = self._read_chunk()
  File "/home/heimes/dev/python/py3k/Lib/io.py", line 1136, in _read_chunk
    pending = self._decoder.decode(readahead, not readahead)
  File "/home/heimes/dev/python/py3k/Lib/codecs.py", line 291, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xbe in position 86:
unexpected code byte