On x86-64 El Capitan 3.x buildbot, test_tools takes longer than 5 minutes, whereas the overall test suite took 31 min. Is someone wrong in test_tools?

http://buildbot.python.org/all/builders/x86-64%20El%20Capitan%203.x/builds/92/steps/test/logs/stdio

Run tests in parallel using 2 child processes
...
10 slowest tests:
- test_tools: 5 min 3 sec
- test_tokenize: 4 min 52 sec
- test_multiprocessing_spawn: 4 min 4 sec
- test_datetime: 3 min 32 sec
- test_lib2to3: 3 min 14 sec
- test_mmap: 2 min 43 sec
- test_multiprocessing_forkserver: 2 min 11 sec
- test_multiprocessing_fork: 1 min 58 sec
- test_io: 1 min 54 sec
- test_subprocess: 1 min 11 sec
...
Total duration: 31 min 20 sec
...