{"record":{"id":"ffeddd8e46ac80a5","repo":"nikivdev/code","slug":"kimi-returned-empty-output","errorCode":null,"errorMessage":"kimi returned empty output","messagePattern":"kimi returned empty output","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src/commit.rs","lineNumber":6064,"sourceCode":"    let _ = stdout_handle.join();\n    let _ = stderr_handle.join();\n\n    let stdout_bytes = stdout_rx.recv().unwrap_or_default();\n    let stderr_text = stderr_rx.recv().unwrap_or_default();\n\n    if !status.success() {\n        let stdout_text = String::from_utf8_lossy(&stdout_bytes);\n        let error_msg = if stderr_text.trim().is_empty() {\n            stdout_text.trim()\n        } else {\n            stderr_text.trim()\n        };\n        bail!(\"kimi review failed: {}\", error_msg);\n    }\n\n    let stdout_text = String::from_utf8_lossy(&stdout_bytes).trim().to_string();\n    if stdout_text.is_empty() {\n        bail!(\"kimi returned empty output\");\n    }\n\n    // Parse the stream-json output from kimi\n    // Format: {\"role\":\"assistant\",\"content\":[{\"type\":\"think\",\"think\":\"...\"},{\"type\":\"text\",\"text\":\"...\"}]}\n    let result = extract_kimi_text_content(&stdout_text).unwrap_or_else(|| stdout_text.clone());\n    if result.is_empty() {\n        bail!(\"kimi returned empty review output (no text content in response)\");\n    }\n\n    // Try to parse JSON from output\n    let mut review_json = parse_review_json(&result);\n    let future_tasks = review_json\n        .as_ref()\n        .map(|json| normalize_future_tasks(&json.future_tasks))\n        .unwrap_or_default();\n    let mut summary = review_json.as_ref().and_then(|r| r.summary.clone());\n    let quality = review_json.as_mut().and_then(|r| r.quality.take());\n    let (mut issues_found, mut issues) = if let Some(ref json) = review_json {","sourceCodeStart":6046,"sourceCodeEnd":6082,"githubUrl":"https://github.com/nikivdev/code/blob/a747e741ae92c09071d0ae946ab48488adcff1ce/src/commit.rs#L6046-L6082","documentation":"Thrown when the kimi process exits successfully but produced no stdout at all. The library treats empty output as unusable (nothing to parse) and bails with this distinct message so it isn't confused with a kimi-reported failure.","triggerScenarios":"kimi exits 0 but stdout_bytes trims to empty — e.g. kimi wrote results only to stderr, was silently killed, or produced no completion.","commonSituations":"Piping/redirect misconfiguration swallowing stdout; kimi CLI printing to stderr while exiting 0; timeouts or signals killing kimi after it started; kimi bug with certain prompts.","solutions":["Run the same kimi command manually with the same flags to see where output actually goes.","Check stderr output from the run for silent warnings.","Update kimi CLI; a stdout/stderr behavior change may be version-related.","Retry the review; if reproducible, report to kimi with the exact prompt/flags."],"exampleFix":null,"handlingStrategy":"fallback","validationCode":"// after run, before parsing: require usable stdout\nlet stdout = String::from_utf8_lossy(&output.stdout).trim().to_string();\nif stdout.is_empty() {\n    anyhow::bail!(\"kimi produced no stdout; stderr: {}\", String::from_utf8_lossy(&output.stderr));\n}","typeGuard":null,"tryCatchPattern":"match run_kimi_review(&diff).await {\n    Err(e) if e.to_string() == \"kimi returned empty output\" => {\n        eprintln!(\"kimi returned nothing; retrying once...\");\n        run_kimi_review(&diff).await\n    }\n    other => other,\n}","preventionTips":["Always capture both stdout and stderr and log them on failure","Retry once on empty output — often transient","Update kimi CLI; version changes can move output between streams","Run kimi manually with identical flags to reproduce before filing bugs"],"tags":["kimi","subprocess","empty-output","ai-review"],"backgroundTag":"ai-cli-empty-output","analyzedSha":"a747e741ae92c09071d0ae946ab48488adcff1ce","analyzedAt":"2026-09-01T22:43:55.719Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}