use faulthandler with umath tests

Author: ndgrigorian

.github/workflows/build-with-clang.yml

@@ -76,4 +76,4 @@ jobs:
           # mkl_umath cannot be installed in editable mode, we need
           # to change directory before importing it and running tests
           cd ..
-          python -m pytest -sv --pyargs mkl_umath
+          python -X faulthandler -m pytest -sv --pyargs mkl_umath

.github/workflows/build-with-standard-clang.yml

@@ -57,8 +57,7 @@ jobs:
 
       - name: Run mkl_umath tests
         run: |
-          pip install pytest
           # mkl_umath cannot be installed in editable mode, we need
           # to change directory before importing it and running tests
           cd ..
-          python -m pytest -sv --pyargs mkl_umath
+          python -X faulthandler -m pytest -sv --pyargs mkl_umath