[Python-Dev] Stable buildbots

[Ned Deily]

In article <30929.1289879830 at parc.com>, Bill Janssen <janssen at parc.com> 
wrote:

> Both the Tiger buildbots are suddenly failing 3.x on test_cmd_line.
> Looking at the changes since the last success, I can't see anything
> which would obviously affect that...  Any suspects?

It appears to be a duplicate of Issue8458.  Playing with it again, it 
seems to be a race condition: sometimes I see all three failures you 
reported, sometimes just one, sometimes none.  Again, only on 10.4 
(Tiger), not 10.5 or 10.6.  But the 10.4 machine I'm using is by far the 
slowest of the three so it is possible that could be a factor.  Perhaps 
a race condition with cleaning up the p2c pipe from a previous run?

> Here's what's failing:
> 
> ======================================================================
> ERROR: test_run_code (test.test_cmd_line.CmdLineTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/test_cmd_line.py"
>   , line 95, in test_run_code
>     assert_python_failure('-c')
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/script_helper.py"
>   , line 55, in assert_python_failure
>     return _assert_python(False, *args, **env_vars)
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/script_helper.py"
>   , line 29, in _assert_python
>     env=env)
>   File "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/subprocess.py", 
>   line 683, in __init__
>     self.stdin = io.open(p2cwrite, 'wb', bufsize)
> OSError: [Errno 9] Bad file descriptor
> 
> ======================================================================
> ERROR: test_run_module (test.test_cmd_line.CmdLineTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/test_cmd_line.py"
>   , line 72, in test_run_module
>     assert_python_failure('-m')
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/script_helper.py"
>   , line 55, in assert_python_failure
>     return _assert_python(False, *args, **env_vars)
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/script_helper.py"
>   , line 29, in _assert_python
>     env=env)
>   File "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/subprocess.py", 
>   line 683, in __init__
>     self.stdin = io.open(p2cwrite, 'wb', bufsize)
> OSError: [Errno 9] Bad file descriptor
> 
> ======================================================================
> ERROR: test_version (test.test_cmd_line.CmdLineTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/test_cmd_line.py"
>   , line 48, in test_version
>     rc, out, err = assert_python_ok('-V')
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/script_helper.py"
>   , line 48, in assert_python_ok
>     return _assert_python(True, *args, **env_vars)
>   File 
>   "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/test/script_helper.py"
>   , line 29, in _assert_python
>     env=env)
>   File "/Users/buildbot/buildarea/3.x.parc-tiger-1/build/Lib/subprocess.py", 
>   line 683, in __init__
>     self.stdin = io.open(p2cwrite, 'wb', bufsize)
> OSError: [Errno 9] Bad file descriptor

-- 
 Ned Deily,
 nad at acm.org