test suite fails on the hurd
util/spawn_background_ok: OK
util/spawn_background_fail:
FAIL test_util.c:1417: assert(stdout_buf == expected_out): <ERR: Failed to spawn background process - code 9/40000002
> vs <ERR: Failed to spawn background process - code 9/2
>
[spawn_background_fail FAILED]
util/spawn_background_partial_read: OK
ERRNO is not 2 everywhere.