fix stderr issue with psij

Author: adi611

.github/workflows/testflux.yml

@@ -34,7 +34,7 @@ jobs:
           apt-get update && apt-get install -y python3-venv
           export PATH=$PWD/bin:$PATH
           ln -s /usr/bin/python3 /usr/bin/python
-          python3 -m pip install --upgrade pip && pip install -e ".[test]" && python -c 'import pydra; print(pydra.__version__)'
+          python -m pip install --upgrade pip && pip install -e ".[test]" && python -c 'import pydra; print(pydra.__version__)'
           pip install -e "git+https://github.com/adi611/psij-python.git@adi611-patch-2#egg=psij-python"
       - name: Start Flux and Run Test
         run: |

pydra/engine/workers.py

@@ -1016,18 +1016,18 @@ async def exec_psij(self, runnable, rerun=False):
             spec.arguments.append("--rerun")
 
         spec.stdout_path = cache_dir / "demo.stdout"
-        # spec.stderr_path = cache_dir / "demo.stderr"
+        spec.stderr_path = cache_dir / "demo.stderr"
 
         job = self.make_job(spec, None)
         jex.submit(job)
         job.wait()
 
-        # if spec.stderr_path.stat().st_size > 0:
-        #     with open(spec.stderr_path, "r") as stderr_file:
-        #         stderr_contents = stderr_file.read()
-        #     raise Exception(
-        #         f"stderr_path '{spec.stderr_path}' is not empty. Contents:\n{stderr_contents}"
-        #     )
+        if spec.stderr_path.stat().st_size > 0:
+            with open(spec.stderr_path, "r") as stderr_file:
+                stderr_contents = stderr_file.read()
+            raise Exception(
+                f"stderr_path '{spec.stderr_path}' is not empty. Contents:\n{stderr_contents}"
+            )
 
         return