subprocess.CalledProcessError: Command '['mpiexec', '-n', '1', '-genv', '_PYTEST_MPI_CHILD_PROCESS', '1', '/__w/firedrake/firedrake_venv/bin/python', '-m', 'pytest', '--runxfail', '-s', '-q', '/__w/firedrake/firedrake/tests/output/test_hdf5file_checkpoint.py::test_write_read_parallel[quad-CG-2]', ':', '-n', '1', '/__w/firedrake/firedrake_venv/bin/python', '-m', 'pytest', '--runxfail', '-s', '-q', '/__w/firedrake/firedrake/tests/output/test_hdf5file_checkpoint.py::test_write_read_parallel[quad-CG-2]', '--tb=no', '--no-summary', '--no-header', '--disable-warnings', '--show-capture=no']' returned non-zero exit status 1.