iflytek/astron-agent · error · CustomException

CODE_EXECUTION_TIMEOUT_ERROR|CODE_EXECUTION_ERROR

CODE_EXECUTION_TIMEOUT_ERROR|CODE_EXECUTION_ERROR

Error message

error_message[:MAX_ERROR_MESSAGE_LENGTH]

What it means

In langchain_executor.execute, when the sandboxed subprocess result reports a non-success status, the executor raises CODE_EXECUTION_TIMEOUT_ERROR if the stderr matches the timeout heuristic (_is_timeout_error) or CODE_EXECUTION_ERROR otherwise. The message is the process stderr (or 'Code execution failed'), truncated to MAX_ERROR_MESSAGE_LENGTH. It represents the local/isolated sandbox refusing or failing the run.

Solutions

1. Read the truncated stderr message in the error to find the exact exception or timeout indicator.
2. Fix the code-node script (imports, null checks, logic) if it's an execution error.
3. Reduce workload or increase timeout/memory bounds if the error is a timeout/OOM kill.
4. Add explicit error handling and prints in user code to fail fast with clear messages instead of deep tracebacks.

Example fix

// before
code = "for i in range(len(data)): process(data[i])  # may exceed timeout"
// after
code = "\nimport signal\n# chunk the work and guard inputs\nassert data, 'empty input'\nfor row in data[:MAX_ROWS]:\n    process(row)"

# pre-flight compile check of user code before sandbox execution
try:
    compile(user_code, "<code_node>", "exec")
except SyntaxError as e:
    raise ValueError(f"code node syntax error before execution: {e}")

def looks_like_timeout(stderr: str) -> bool:
    s = (stderr or "").lower()
    return "timeout" in s or "timed out" in s or "killed" in s

try:
    output = await executor.execute(language, code, timeout, span)
except CustomException as e:
    if e.err_code in (CodeEnum.CODE_EXECUTION_TIMEOUT_ERROR, CodeEnum.CODE_EXECUTION_ERROR):
        logger.error("sandbox failure: %s", e.err_msg)
        output = ""

When it happens

Trigger: Calling execute() with code that exits nonzero: raises an uncaught Python/JS exception (stderr contains traceback), exceeds bounded_timeout so the runner kills it (timeout error string), violates memory_limit_mb, or the runner itself crashes and writes errors to stderr.

Common situations: Timeouts from infinite loops or oversized workloads; unhandled exceptions from wrong assumptions about input variables; memory-limit kills on large dataframes; stderr noise from warnings combined with a real error overflowing truncation.

Related errors

• CODE_EXECUTION_ERROR
• 21600
• CODE_EXECUTION_TIMEOUT_ERROR|CODE_EXECUTION_ERROR
• CODE_EXECUTION_TIMEOUT_ERROR
• Timed out acquiring distributed lock, please try again later

AI-assisted analysis of iflytek/astron-agent@5e758547a8 (2026-09-12). Data as JSON: /api/errors/7809686067408e5c. Report an issue: GitHub.

Appendix: source

Thrown at core/workflow/engine/nodes/code/executor/langchain/langchain_executor.py:109

                    source_file.write(code)
                sandbox = _FilePyodideSandbox(
                    source_path,
                    allow_env=False,
                    allow_read=["node_modules", source_path],
                    allow_write=False,
                    allow_net=False,
                    allow_run=False,
                    allow_ffi=False,
                )
                result = await sandbox.execute(
                    code,
                    timeout_seconds=bounded_timeout,
                    memory_limit_mb=bounded_memory_limit,
                )
            if result.status == "success":
                return result.stdout if result.stdout else ""
            error_message = (result.stderr or "Code execution failed").strip()
            raise CustomException(
                err_code=(
                    CodeEnum.CODE_EXECUTION_TIMEOUT_ERROR
                    if _is_timeout_error(error_message)
                    else CodeEnum.CODE_EXECUTION_ERROR
                ),
                err_msg=error_message[:MAX_ERROR_MESSAGE_LENGTH],
            )

        except CustomException as e:
            raise e

        except Exception as e:
            raise CustomException(
                err_code=CodeEnum.CODE_EXECUTION_ERROR,
                cause_error=e,
            ) from e

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