JuliusBrussee/caveman · error · RuntimeError

Claude call failed: {e.stderr}

Error message

Claude call failed:
{e.stderr}

What it means

Error "Claude call failed: {e.stderr}" thrown in JuliusBrussee/caveman.

Source

Thrown at plugins/caveman/skills/caveman-compress/scripts/compress.py:223

    # Resolve binary via shutil.which so Windows .cmd/.bat shims (e.g.
    # %APPDATA%\npm\claude.CMD) work without shell=True. On POSIX,
    # shutil.which returns the same absolute path as the implicit lookup,
    # so this is a no-op there. Falls back to bare "claude" if not found
    # on PATH so subprocess raises a clear FileNotFoundError.
    claude_bin = shutil.which("claude") or "claude"
    try:
        result = subprocess.run(
            [claude_bin, "--print"],
            input=prompt,
            text=True,
            capture_output=True,
            check=True,
            encoding="utf-8",
            errors="replace",
        )
        return strip_llm_wrapper(result.stdout.strip())
    except subprocess.CalledProcessError as e:
        raise RuntimeError(f"Claude call failed:\n{e.stderr}")


def build_compress_prompt(original: str) -> str:
    return f"""
Compress this markdown into caveman format.

STRICT RULES:
- Do NOT modify anything inside ``` code blocks
- Do NOT modify anything inside inline backticks
- Preserve ALL URLs exactly
- Preserve ALL headings exactly
- Preserve file paths and commands
- Return ONLY the compressed markdown body — do NOT wrap the entire output in a ```markdown fence or any other fence. Inner code blocks from the original stay as-is; do not add a new outer fence around the whole file.

Only compress natural language.

TEXT:
{original}

View on GitHub (pinned to 27d5a3981a)

Solutions

1. The Claude CLI call failed; read stderr in the message, fix the invocation, and retry.

When it happens

Trigger: Thrown at plugins/caveman/skills/caveman-compress/scripts/compress.py:223 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/5a9b3905d376c8a1. Report an issue: GitHub.