Command ['sh', '-c', " ( DIR=$(python -c 'import mypy, os; dn = os.path.dirname; print(dn(dn(mypy.__path__[0])))') && cp '/project/mypy/pyproject.toml' '/project/mypy/conftest.py' $DIR && MYPY_TEST_DIR=$(python -c 'import mypy.test; print(mypy.test.__path__[0])') && MYPYC_TEST_DIR=$(python -c 'import mypyc.test; print(mypyc.test.__path__[0])') && MYPY_TEST_PREFIX='/project/mypy' pytest $MYPY_TEST_DIR $MYPYC_TEST_DIR -k 'not test_external' )\n"] failed with code 1.