fix oss runner seg fault (#22)

Summary:

OSS workflow runs into a seg fault when executing tests. Core dump (P1818378198) seems to imply this is from a localization assignment issue. Tentatively, we can fix this with LC_ALL=C

Differential Revision: D75159472

Author: amirafzali

.github/workflows/test.yml

@@ -61,5 +61,5 @@ jobs:
         python setup.py install
 
         # Run tests
-        pytest python/tests/ -s -v -m "not oss_skip"
+        LC_ALL=C pytest python/tests/ -v -m "not oss_skip"
         python python/tests/test_mock_cuda.py

README.md

@@ -37,6 +37,9 @@ pip install pyzmq requests numpy pyre-extensions pytest-timeout cloudpickle
 python setup.py install
 # or setup for development
 python setup.py develop
+
+# run unit tests. consider -s for more verbose output
+pytest python/tests/ -v -m "not oss_skip"
 ```
 
 ## Running examples