{"record":{"id":"2b146390d236872f","repo":"FoundationAgents/OpenManus","slug":"failed-to-verify-file-creation-dst-path","errorCode":null,"errorMessage":"Failed to verify file creation: {dst_path}","messagePattern":"Failed to verify file creation: (.+?)","errorType":"exception","errorClass":"RuntimeError","httpStatus":null,"severity":"error","filePath":"app/sandbox/core/sandbox.py","lineNumber":370,"sourceCode":"                        # Add single file to tar\n                        tar.add(src_path, arcname=os.path.basename(dst_path))\n\n                # Read tar file content\n                with open(tar_path, \"rb\") as f:\n                    data = f.read()\n\n                # Upload to container\n                await asyncio.to_thread(\n                    self.container.put_archive,\n                    os.path.dirname(resolved_dst) or \"/\",\n                    data,\n                )\n\n                # Verify file was created successfully\n                try:\n                    await self.run_command(f\"test -e {resolved_dst}\")\n                except Exception:\n                    raise RuntimeError(f\"Failed to verify file creation: {dst_path}\")\n\n        except FileNotFoundError:\n            raise\n        except Exception as e:\n            raise RuntimeError(f\"Failed to copy file: {e}\")\n\n    @staticmethod\n    async def _create_tar_stream(name: str, content: bytes) -> io.BytesIO:\n        \"\"\"Creates a tar file stream.\n\n        Args:\n            name: Filename.\n            content: File content.\n\n        Returns:\n            Tar file stream.\n        \"\"\"\n        tar_stream = io.BytesIO()","sourceCodeStart":352,"sourceCodeEnd":388,"githubUrl":"https://github.com/FoundationAgents/OpenManus/blob/52a13f2a57d8c7f6737eefb02ccf569594d44273/app/sandbox/core/sandbox.py#L352-L388","documentation":"Raised as RuntimeError by DockerSandbox.copy_to (app/sandbox/core/sandbox.py:370) as a post-write verification failure: the tar was uploaded with put_archive and then `test -e <resolved_dst>` inside the container failed, so the file is not where it was expected. Common root causes: resolved_dst differing from where the tar actually landed (put_archive extracts relative to the parent dir), the uploaded member name not matching resolved_dst's basename, or the file being created then removed by a hook. Note the verification swallows the underlying exception from run_command (e.g. error 25's 'Sandbox not initialized' also surfaces here).","triggerScenarios":"dst_path whose basename differs from the tar member name used for the upload; trailing-slash or normalization differences between resolved_dst and the extracted path; put_archive writing to os.path.dirname(resolved_dst) while test -e checks a symlinked/aliased path; container FS overlay quirks; terminal is None so the verification command itself fails.","commonSituations":"Copying to a dst that ends with '/' (empty basename in tar); dst inside a read-only mount where extraction silently fails; resolved path going through _safe_resolve_path changing the expectation (relative -> work_dir join) while the caller checks the raw path.","solutions":["Make dst_path a clean absolute container path with a real basename: strip trailing '/', avoid '..' (error 32).","Ensure the destination directory was actually created (the mkdir -p ran without error) and the mount is rw.","After the failure, inspect: run_command(f\"ls -la {dirname}\") to see what name actually landed.","If sandbox terminal was never initialized, fix the lifecycle (error 25) — the verifier depends on run_command."],"exampleFix":"# before\nawait sandbox.copy_to(host_src, \"data/\")  # trailing slash -> empty basename\n\n# after\nawait sandbox.copy_to(host_src, \"/workspace/data/input.json\")  # clean absolute path with basename","handlingStrategy":"try-catch","validationCode":"dst = \"/\" + os.path.normpath(dst_path).lstrip(\"/\")\nassert not dst.endswith(\"/\") and \"..\" not in dst.split(\"/\") and os.path.basename(dst)","typeGuard":null,"tryCatchPattern":"try:\n    await sandbox.copy_to(src, dst)\nexcept RuntimeError as e:\n    if \"Failed to verify\" in str(e):\n        listing = await sandbox.run_command(f\"ls -la {os.path.dirname(dst)}\")\n        log.error(\"landed files: %s\", listing)  # find the real name and fix dst\n        raise","preventionTips":["Pass clean absolute dst paths with a real basename (no trailing '/')","Ensure the destination dir exists and the mount is rw","Beware: this verification also fails if the sandbox terminal was never initialized (error 25)","After copy_to, verify with your own ls rather than trusting silence"],"tags":["sandbox","copy","verification","put-archive","path-resolution"],"backgroundTag":null,"analyzedSha":"52a13f2a57d8c7f6737eefb02ccf569594d44273","analyzedAt":"2026-08-15T02:33:49.993Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}