*** Running test-parse-osh
---
Traceback (most recent call last):
  File "/home/uke/oil/bin/oils_for_unix.py", line 20, in <module>
    import posix_ as posix
ImportError: No module named posix_
xargs: ysh/run.sh: exited with status 255; aborting
FAIL  test-parse-osh