fix: skip usage

Author: hanchchch

src/isolate/backends/virtualenv.py

@@ -3,6 +3,7 @@
 import contextlib
 import io
 import os
+import re
 import shutil
 import subprocess
 import sys
@@ -208,6 +209,10 @@ def create(self, *, force: bool = False) -> Path:
                     virtualenv.cli_run(args)
             except (SystemExit, RuntimeError, OSError) as exc:
                 stderr_output = stderr_capture.getvalue().strip()
+                # Strip the verbose argparse usage banner
+                stderr_output = re.sub(
+                    r"^usage:.*\n(?:\s.*\n)*", "", stderr_output
+                ).strip()
                 ellipsed_stderr = (
                     f"...{stderr_output[-_MAX_ERROR_MESSAGE_LENGTH:]}"
                     if len(stderr_output) > _MAX_ERROR_MESSAGE_LENGTH