OSX CI has been red since (14 days) https://github.com/pantsbuild/pants/commit/0bff3f9c5b4ceb057c8fc0d0b119e3e431a9af1d (pantsd/watchman stuff) with failures of the form:

INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/Users/travis/build/pantsbuild-osx/pants/.pants.d/python-setup/chroots/5636aa8b650da53d5e155a3da7a18758b998fce0/.deps/pytest-2.6.4-py2-none-any.whl/_pytest/main.py", line 84, in wrap_session
INTERNALERROR>   File "/Users/travis/build/pantsbuild-osx/pants/.pants.d/python-setup/chroots/5636aa8b650da53d5e155a3da7a18758b998fce0/.deps/pytest-2.6.4-py2-none-any.whl/_pytest/main.py", line 122, in _main
...
INTERNALERROR>   File "/Users/travis/build/pantsbuild-osx/pants/.pants.d/python-setup/chroots/5636aa8b650da53d5e155a3da7a18758b998fce0/.deps/py-1.4.31-py2.py3-none-any.whl/py/_path/local.py", line 149, in __init__
INTERNALERROR>   File "/Users/travis/build/pantsbuild-osx/pants/.pants.d/python-setup/chroots/5636aa8b650da53d5e155a3da7a18758b998fce0/.deps/py-1.4.31-py2.py3-none-any.whl/py/_error.py", line 84, in checked_call
INTERNALERROR> EMFILE: [Too many open files]: getcwd()

Known / unknown - any OSX users hit something like this?