$ ./python -m test test_posix
Using random seed: 3412046247
0:00:00 load avg: 0.00 Run 1 test sequentially in a single process
0:00:00 load avg: 0.00 [1/1] test_posix
test test_posix failed -- Traceback (most recent call last):
  File "/home/blue/cpython/Lib/test/test_posix.py", line 407, in test_posix_fallocate
    posix.posix_fallocate(fd, 0, 10)
    ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
OSError: [Errno 45] Operation not supported

test_posix failed (1 error)

== Tests result: FAILURE ==

1 test failed:
    test_posix

Total duration: 4.7 sec
Total tests: run=167 skipped=41
Total test files: run=1/1 failed=1
Result: FAILURE