Failures on the default branch with a timeout of 15 minutes:

 - test_io on "x86 FreeBSD 3.x"
 - test_signal on "x86 FreeBSD 7.2 3.x"
 - test_stdin_none on "sparc solaris10 gcc 3.x"

I think that the tests failed because the buildbot is slow, not because of a hang. These tests did not fail before. So I changed the timeout from 15 minutes to 30 minutes.

Trace of the "x86 FreeBSD 3.x" failure:
--------------
...
[  2/354] test_io
Thread 0x081f3000:
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/case.py", line 574 in assertRaises
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/test/test_io.py", line 2647 in check_interrupted_write
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/test/test_io.py", line 2669 in test_interrupted_write_buffered
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/case.py", line 387 in _executeTestPart
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/case.py", line 442 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/case.py", line 494 in __call__
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/suite.py", line 105 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/suite.py", line 67 in __call__
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/suite.py", line 105 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/unittest/suite.py", line 67 in __call__
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/test/support.py", line 1078 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/test/support.py", line 1166 in _run_suite
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/test/support.py", line 1192 in run_unittest
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Lib/test/test_io.py", line 2845 in test_main
  File "./Lib/test/regrtest.py", line 1032 in runtest_inner
  File "./Lib/test/regrtest.py", line 826 in runtest
  File "./Lib/test/regrtest.py", line 650 in main
  File "./Lib/test/regrtest.py", line 1607 in <module>
--------------

Trace of the "x86 FreeBSD 7.2 3.x" failure:
-----------
...
[ 19/354] test_signal
Thread 0x28401040:
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/test/test_signal.py", line 436 in test_itimer_real
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/case.py", line 387 in _executeTestPart
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/case.py", line 442 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/case.py", line 494 in __call__
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/suite.py", line 105 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/suite.py", line 67 in __call__
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/suite.py", line 105 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/unittest/suite.py", line 67 in __call__
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/test/support.py", line 1078 in run
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/test/support.py", line 1166 in _run_suite
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/test/support.py", line 1192 in run_unittest
  File "/usr/home/db3l/buildarea/3.x.bolen-freebsd7/build/Lib/test/test_signal.py", line 490 in test_main
  File "./Lib/test/regrtest.py", line 1032 in runtest_inner
  File "./Lib/test/regrtest.py", line 826 in runtest
  File "./Lib/test/regrtest.py", line 650 in main
  File "./Lib/test/regrtest.py", line 1607 in <module>
-----------
http://www.python.org/dev/buildbot/all/builders/x86%20FreeBSD%207.2%203.x/builds/1643/steps/test/logs/stdio

Trace of the Solaris failure:
------------
...
[277/354] test_subprocess
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.
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    this bit of output is from a test of stdout in a different process ...
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    this bit of output is from a test of stdout in a different process ...
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    this bit of output is from a test of stdout in a different process ...
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Thread 0x00000001:
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/subprocess.py", line 466 in _eintr_retry_call
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/subprocess.py", line 1479 in _try_wait
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/subprocess.py", line 1521 in wait
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/test_subprocess.py", line 155 in test_stdin_none
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/case.py", line 387 in _executeTestPart
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/case.py", line 442 in run
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/case.py", line 494 in __call__
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/suite.py", line 105 in run
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/suite.py", line 67 in __call__
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/suite.py", line 105 in run
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/unittest/suite.py", line 67 in __call__
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/support.py", line 1078 in run
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/support.py", line 1166 in _run_suite
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/support.py", line 1192 in run_unittest
  File "/home2/buildbot/slave/3.x.loewis-sun/build/Lib/test/test_subprocess.py", line 1607 in test_main
  File "./Lib/test/regrtest.py", line 1032 in runtest_inner
  File "./Lib/test/regrtest.py", line 826 in runtest
  File "./Lib/test/regrtest.py", line 650 in main
  File "./Lib/test/regrtest.py", line 1607 in <module>
*** Error code 1
make: Fatal error: Command failed for target `buildbottest'
------------
http://www.python.org/dev/buildbot/all/builders/sparc%20solaris10%20gcc%203.x/builds/2861/steps/test/logs/stdio