fix(core): handle rare case where the repository is so broken than 'hg up' fails

cube_doctor/__init__.py

@@ -423,10 +423,19 @@ class Command:
                     cube, repo, root_files, branches, other_args
                 )
                 while True:
+                    try:
                         repo.run_command(
                             'hg up -C -r "last(public() and branch(default))"',
                             capture_output=True,
                         )
+                    except Exception:
+                        import traceback
+
+                        traceback.print_exc()
+                        logger.error(
+                            "failed to 'hg up', the repository is probably broken, skip it"
+                        )
+                        return
                     try:
                         # {"branch_name": ..., "commit_message": ...}
                         logger.info(f"run modification command for {self}")