The process is even killed.

http://buildbot.python.org/all/builders/AMD64%20FreeBSD%209.x%203.x/builds/275/steps/test/logs/stdio

Re-running test 'test_signal' in verbose mode
test_enums (test.test_signal.GenericTests) ... ok
test_itimer_exc (test.test_signal.ItimerTest) ... ok
test_itimer_prof (test.test_signal.ItimerTest) ... ok
test_itimer_real (test.test_signal.ItimerTest) ... ok
test_itimer_virtual (test.test_signal.ItimerTest) ... ok
test_pthread_kill (test.test_signal.PendingSignalsTests) ... ok
test_pthread_kill_main_thread (test.test_signal.PendingSignalsTests) ... ok
test_pthread_sigmask (test.test_signal.PendingSignalsTests) ... ok
test_pthread_sigmask_arguments (test.test_signal.PendingSignalsTests) ... ok
test_sigpending (test.test_signal.PendingSignalsTests) ... ok
test_sigpending_empty (test.test_signal.PendingSignalsTests) ... ok
test_sigtimedwait (test.test_signal.PendingSignalsTests) ... ok
test_sigtimedwait_negative_timeout (test.test_signal.PendingSignalsTests) ... ok
test_sigtimedwait_poll (test.test_signal.PendingSignalsTests) ... ok
test_sigtimedwait_timeout (test.test_signal.PendingSignalsTests) ... ok
test_sigwait (test.test_signal.PendingSignalsTests) ... ok
test_sigwait_thread (test.test_signal.PendingSignalsTests) ... ok
test_sigwaitinfo (test.test_signal.PendingSignalsTests) ... ok
test_getsignal (test.test_signal.PosixTests) ... ok
test_interprocess_signal (test.test_signal.PosixTests) ... ok
test_out_of_range_signal_number_raises_error (test.test_signal.PosixTests) ... ok
test_setting_signal_handler_to_none_raises_error (test.test_signal.PosixTests) ... ok
test_siginterrupt_off (test.test_signal.SiginterruptTest) ... ok
test_siginterrupt_on (test.test_signal.SiginterruptTest) ... ok
test_without_siginterrupt (test.test_signal.SiginterruptTest) ... ok
test_stress_delivery_dependent (test.test_signal.StressTest) ... FAIL
test_stress_delivery_simultaneous (test.test_signal.StressTest) ... FAIL
test_invalid_fd (test.test_signal.WakeupFDTests) ... ok
test_invalid_socket (test.test_signal.WakeupFDTests) ... ok
test_set_wakeup_fd_blocking (test.test_signal.WakeupFDTests) ... ok
test_set_wakeup_fd_result (test.test_signal.WakeupFDTests) ... ok
test_set_wakeup_fd_socket_result (test.test_signal.WakeupFDTests) ... ok
test_pending (test.test_signal.WakeupSignalTests) ... *** [buildbottest] Signal 14