{"record":{"id":"ec495717c5dbddfc","repo":"Zackriya-Solutions/meetily","slug":"failed-to-preserve-after-timeout","errorCode":null,"errorMessage":"Failed to preserve {} after timeout: {}","messagePattern":"Failed to preserve (.+?) after timeout: (.+?)","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs","lineNumber":1011,"sourceCode":"            let mut writer = BufWriter::with_capacity(8 * 1024 * 1024, file);\n            use futures_util::StreamExt;\n            let mut stream = response.bytes_stream();\n\n            loop {\n                let next_chunk = tokio::select! {\n                    biased;\n                    _ = active_download.cancellation.cancelled() => {\n                        writer.flush().await.map_err(|error| {\n                            anyhow!(\"Failed to preserve {} during cancellation: {}\", artifact.filename, error)\n                        })?;\n                        return Err(DownloadCancelled.into());\n                    }\n                    chunk = timeout(Duration::from_secs(30), stream.next()) => chunk,\n                };\n                let chunk = match next_chunk {\n                    Err(_) => {\n                        writer.flush().await.map_err(|error| {\n                            anyhow!(\"Failed to preserve {} after timeout: {}\", artifact.filename, error)\n                        })?;\n                        return Err(anyhow!(\n                            \"Download timeout for {}: no data received for 30 seconds\",\n                            artifact.filename\n                        ));\n                    }\n                    Ok(None) => break,\n                    Ok(Some(Err(error))) => {\n                        writer.flush().await.map_err(|flush_error| {\n                            anyhow!(\n                                \"Failed to preserve {} after stream error: {}\",\n                                artifact.filename,\n                                flush_error\n                            )\n                        })?;\n                        return Err(anyhow!(\"Download stream failed for {}: {}\", artifact.filename, error));\n                    }\n                    Ok(Some(Ok(chunk))) => chunk,","sourceCodeStart":993,"sourceCodeEnd":1029,"githubUrl":"https://github.com/Zackriya-Solutions/meetily/blob/a2cb62e827da7ef59f65064c97233efb2313878e/frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs#L993-L1029","documentation":"Raised when the download stream stalls and `tokio::time::timeout(Duration::from_secs(30), stream.next())` elapses with no chunk arriving. The engine flushes the buffered writer to preserve the partial file for a later range-resume, then throws this error. If that emergency flush fails, this error message is produced instead of the timeout message.","triggerScenarios":"The HTTP body stream for a Parakeet artifact produces no chunk within 30 seconds: the CDN/HF mirror stalls mid-transfer, the network drops without an RST (VPN/sleep/wifi change), a proxy silently holds the connection, or the server stops sending after partial content. Only fires when the subsequent flush also errors (otherwise the \"Download timeout\" error 43 is returned).","commonSituations":"Laptop suspends mid-download and the connection is dead on resume; corporate proxy drops long-running large-file transfers; flaky wifi drops packets during a multi-GB model download; the Hugging Face CDN throttles or stalls a slow connection.","solutions":["Simply retry the download — the engine preserves partial bytes specifically so the next attempt resumes via HTTP Range; transient stalls are expected.","Check network stability (VPN, proxy, wifi) and disable throttling proxies for the model host.","Free disk space / fix storage access — this exact message only appears when the stall-timeout flush also failed, typically because the disk filled during the stall.","If stalls are chronic, increase the 30-second `timeout` window or add automatic retry-with-backoff around the download loop.","Verify the artifacts' URL host is reachable (curl the file URL with a Range header) to rule out server-side issues."],"exampleFix":"// before: single attempt, one 30s stall kills the download\nreturn Err(anyhow!(\"Failed to preserve {} after timeout: {}\", artifact.filename, error));\n\n// after: caller-side retry loop; partial file makes the next attempt resume\nfor attempt in 1..=3 {\n    match engine.download_models(&artifacts, &cancel).await {\n        Ok(()) => break,\n        Err(e) if attempt < 3 && !cancel.is_cancelled() => {\n            log::warn!(\"model download stalled ({}), retry {}/3\", e, attempt + 1);\n            tokio::time::sleep(Duration::from_secs(2u64.pow(attempt))).await;\n        }\n        Err(e) => return Err(e),\n    }\n}","handlingStrategy":"retry","validationCode":"// pre-flight: is the artifact host responsive at all?\nlet probe = reqwest::Client::new()\n    .head(&file_url)\n    .timeout(Duration::from_secs(10))\n    .send().await;\nif !matches!(&probe, Ok(r) if r.status().is_success() || r.status().as_u16() == 206) {\n    return Err(\"artifact host unreachable or throttling; fix network before download\".into());\n}","typeGuard":null,"tryCatchPattern":"let mut attempt = 0;\nloop {\n    match engine.download_models(&artifacts, &token).await {\n        Err(e) if e.to_string().contains(\"after timeout\") && attempt < 3 => {\n            attempt += 1;\n            tokio::time::sleep(Duration::from_secs(2u64.pow(attempt))).await;\n        }\n        other => break other,\n    }\n}","preventionTips":["Always retry stalled downloads — the engine preserves partial bytes for Range resume","Avoid flaky transports: disable idle-killing proxies/VPNs for the model CDN host","Keep the machine awake during large model downloads (prevent system sleep)","Verify disk space before resuming; a full disk turns any stall into this flush error"],"tags":["network","timeout","stall","model-download","rust"],"backgroundTag":"request-timeout","analyzedSha":"a2cb62e827da7ef59f65064c97233efb2313878e","analyzedAt":"2026-09-12T11:12:14.152Z","contentChangedAt":"2026-09-12T11:12:14.152Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}