Timeout seen on "x86-64 Ubuntu 15.10 Skylake CPU 3.5" buildbot:

http://buildbot.python.org/all/builders/x86-64%20Ubuntu%2015.10%20Skylake%20CPU%203.5/builds/357/steps/test/logs/stdio

[215/398] test_urllib2net
Timeout (0:15:00)!
Thread 0x00007f71354be700 (most recent call first):
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/socket.py", line 575 in readinto
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/http/client.py", line 258 in _read_status
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/http/client.py", line 297 in begin
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/http/client.py", line 1197 in getresponse
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/urllib/request.py", line 1246 in do_open
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/urllib/request.py", line 1271 in http_open
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/urllib/request.py", line 443 in _call_chain
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/urllib/request.py", line 483 in _open
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/urllib/request.py", line 465 in open
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/urllib/request.py", line 162 in urlopen
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/test_urllib2net.py", line 19 in _retry_thrice
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/test_urllib2net.py", line 27 in wrapped
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/test_urllib2net.py", line 255 in test_http_basic
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/case.py", line 600 in run
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/case.py", line 648 in __call__
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/suite.py", line 122 in run
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/suite.py", line 84 in __call__
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/suite.py", line 122 in run
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/suite.py", line 84 in __call__
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/suite.py", line 122 in run
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/suite.py", line 84 in __call__
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/unittest/runner.py", line 176 in run
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/support/__init__.py", line 1800 in _run_suite
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/support/__init__.py", line 1834 in run_unittest
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/regrtest.py", line 1305 in test_runner
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/regrtest.py", line 1306 in runtest_inner
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/regrtest.py", line 991 in runtest
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/regrtest.py", line 784 in main
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/regrtest.py", line 1592 in main_in_temp_cwd
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/test/__main__.py", line 3 in <module>
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/runpy.py", line 85 in _run_code
  File "/home/buildbot/buildarea/3.5.intel-ubuntu-skylake/build/Lib/runpy.py", line 184 in _run_module_as_main