xai-org/grok-build · error

failed

Error message

{} failed: {}

What it means

This is the terminal error of the retry loop in storage_client's network-retrying operations: when a request fails and attempts have exceeded retry_config.max_retries, the client gives up and wraps the last error as "{operation} failed: {e}". It signals all retries for the named operation (e.g. upload) were exhausted due to persistent network/transport failures.

Solutions

  1. Inspect the wrapped inner error to find the root transport failure (timeout, refused, DNS).
  2. Confirm network reachability of the storage endpoint (curl the health/base URL).
  3. Increase retry_config.max_retries or backoff if failures are intermittent.
  4. Correct endpoint/DNS/proxy configuration pointing to the storage service.

Example fix

// before
let retry_config = RetryConfig { max_retries: 2, .. };

// after
let retry_config = RetryConfig { max_retries: 5, .. };
Defensive patterns

Strategy: retry

Validate before calling

// Check reachability before entering retry-heavy operations
let reachable = tokio::net::TcpStream::connect((host, port)).await.is_ok();
if !reachable {
    anyhow::bail!("storage endpoint {host}:{port} unreachable; fix network first");
}

Try / catch

// Detect retry exhaustion by suffix and apply backoff at the caller
if let Some(rest) = e.to_string().strip_suffix(" failed") {
    // message format: "{operation} failed: {inner}"
    tracing::error!("operation {rest} exhausted retries: {e:#}");
    // re-run with larger max_retries or alert
}

Prevention

When it happens

Trigger: Repeated reqwest send() failures (connection refused, DNS failure, timeouts) across max_retries attempts for the operation named in the message; non-retryable transport error immediately failing on every attempt.

Common situations: Storage endpoint unreachable (VPN off, firewall, wrong host/port); DNS misconfiguration; server outage lasting longer than the retry window; excessively low max_retries combined with flaky connectivity.

Related errors

AI-assisted analysis of xai-org/grok-build@bc7f02eddd (2026-08-31). Data as JSON: /api/errors/07d9e7390fd5a175. Report an issue: GitHub.

Appendix: source

Thrown at crates/codegen/xai-file-utils/src/storage_client.rs:1248

                    let check = ResponseCheck::from_response(response, &operation).await;
                    if check.is_retryable && attempt < self.retry_config.max_retries {
                        check.wait_for_retry(&self.retry_config, attempt).await;
                        attempt += 1;
                        continue;
                    }
                    return Err(HttpUploadError {
                        status_code: check.status_code,
                        message: check.message,
                    }
                    .into());
                }
                Err(e) => {
                    if attempt < self.retry_config.max_retries {
                        wait_for_network_retry(&self.retry_config, &operation, attempt, &e).await;
                        attempt += 1;
                        continue;
                    }
                    return Err(anyhow::anyhow!("{} failed: {}", operation, e));
                }
            }
        }
    }

    /// Uploads a file to GCS with retry logic for transient failures.
    ///
    /// This is more memory-efficient than `upload()` as it streams the file content
    /// without loading it entirely into memory. Unlike `upload_stream()`, this method
    /// supports automatic retries by re-reading from the file on each attempt.
    ///
    /// Retries on 429 (rate limit), 500, 502, 503, 504 errors with configurable
    /// exponential backoff and jitter. Respects `Retry-After` headers from 429 responses.
    ///
    /// # Arguments
    /// * `dest_path` - The destination path in the bucket (e.g., "uploads/file.txt")
    /// * `file_path` - Path to the local file to upload
    /// * `content_type` - MIME type of the content (e.g., "application/gzip")

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