It seems like test_pydoc only hangs on ARMv7 Ubuntu 3.x. Why faulthandler doesn't dump a traceback? :-(

faulthandler is supposed to dump a traceback after 900 seconds. Here, regrtest was killed after 1200 seconds and test_pydoc was already running for 423 seconds.

http://buildbot.python.org/all/builders/ARMv7%20Ubuntu%203.x/builds/1094/steps/test/logs/stdio

./python  ./Tools/scripts/run_tests.py -j 1 -u all -W --slowest --fail-env-changed --timeout=900 -j2 -j8
...
0:10:28 load avg: 6.21 [403/406] test_venv passed (34 sec) -- running: test_pydoc (400 sec), test_pickle (47 sec), test_tools (338 sec)
0:10:32 load avg: 5.95 [404/406] test_pickle passed (51 sec) -- running: test_pydoc (405 sec), test_tools (343 sec)
0:10:51 load avg: 4.83 [405/406] test_tools passed (361 sec) -- running: test_pydoc (423 sec)

command timed out: 1200 seconds without output running ['make', 'buildbottest', 'TESTOPTS=-j2 -j8', 'TESTPYTHONOPTS=', 'TESTTIMEOUT=900'], attempting to kill
process killed by signal 9
program finished with exit code -1