zed-industries/zed · error

Failed to serialize batch item: {:?}

Error message

Failed to serialize batch item: {:?}

What it means

upload_pending_requests serializes each pending request as a BatchRequestItem JSONL line; serialization failed and the serde error is wrapped. The cached request row contains data that cannot be represented as a batch item.

Source

Thrown at crates/edit_prediction_cli/src/openai_client.rs:523

                    stream: false,
                    stream_options: None,
                    max_completion_tokens: Some(serializable_request.max_tokens),
                    max_tokens: None,
                    stop: Vec::new(),
                    temperature: None,
                    tool_choice: None,
                    parallel_tool_calls: None,
                    service_tier: None,
                    tools: Vec::new(),
                    prompt_cache_key: None,
                    reasoning_effort: None,
                };

                let custom_id = format!("req_hash_{}", hash);
                let batch_item = batches::BatchRequestItem::new(custom_id, request);
                let line = batch_item
                    .to_jsonl_line()
                    .map_err(|e| anyhow::anyhow!("Failed to serialize batch item: {:?}", e))?;
                jsonl_content.push_str(&line);
                jsonl_content.push('\n');
            }

            let filename = format!("batch_{}.jsonl", chrono::Utc::now().timestamp());
            let file_obj = batches::upload_batch_file(
                self.http_client.as_ref(),
                OPEN_AI_API_URL,
                &self.api_key,
                &filename,
                jsonl_content.into_bytes(),
            )
            .await
            .map_err(|e| anyhow::anyhow!("Failed to upload batch file: {:?}", e))?;

            let batch = batches::create_batch(
                self.http_client.as_ref(),
                OPEN_AI_API_URL,

View on GitHub (pinned to f4178619ac)

Solutions

1. Inspect the wrapped error to find the unserializable field
2. Clear or regenerate the offending cached requests

When it happens

Trigger: Thrown at crates/edit_prediction_cli/src/openai_client.rs:523 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@f4178619ac (2026-08-20). Data as JSON: /api/errors/3fdabcb9e54a2a4f. Report an issue: GitHub.