{"record":{"id":"abbd566c2a9cd017","repo":"Hmbown/CodeWhale","slug":"job-task-id-merges-stderr-into-stdout","errorCode":null,"errorMessage":"Job {task_id} merges stderr into stdout","messagePattern":"Job (.+?) merges stderr into stdout","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/tui/src/tools/shell.rs","lineNumber":3251,"sourceCode":"            let tail_start = total.saturating_sub(tail.len());\n            let offset = cursor.max(tail_start).min(total);\n            let next_offset = offset.saturating_add(max_bytes).min(total);\n            return Ok(ShellOutputChunk {\n                offset,\n                bytes: tail.as_bytes()[offset - tail_start..next_offset - tail_start].to_vec(),\n                next_offset,\n                total,\n                dropped: tail_start,\n                status: snapshot.status.clone(),\n                exit_code: snapshot.exit_code,\n            });\n        };\n        let buffer = match stream {\n            ShellOutputStream::Stdout => shell.stdout_buffer.clone(),\n            ShellOutputStream::Stderr => shell\n                .stderr_buffer\n                .clone()\n                .ok_or_else(|| anyhow!(\"Job {task_id} merges stderr into stdout\"))?,\n        };\n\n        let wait_deadline = (wait_ms > 0 && shell.status == ShellStatus::Running)\n            .then(|| Instant::now() + Duration::from_millis(wait_ms.clamp(50, 30_000)));\n        loop {\n            shell.poll();\n            let total = buffer.lock().map(|guard| guard.total_len()).unwrap_or(0);\n            let done_waiting = total > cursor\n                || shell.status != ShellStatus::Running\n                || wait_deadline.is_none_or(|deadline| Instant::now() >= deadline);\n            if done_waiting {\n                break;\n            }\n            std::thread::sleep(Duration::from_millis(50));\n        }\n\n        let (bytes, offset, next_offset, total, dropped) = {\n            let guard = buffer.lock().unwrap_or_else(|e| e.into_inner());","sourceCodeStart":3233,"sourceCodeEnd":3269,"githubUrl":"https://github.com/Hmbown/CodeWhale/blob/73e0f67d83c59909b571efdfc88c4bc28c309cb1/crates/tui/src/tools/shell.rs#L3233-L3269","documentation":"Shell output chunking invariant: the job was started with stderr merged into stdout, so reads must be served from the single merged tail buffer; this error fires when a read path assumes separate streams and would mis-slice the merged buffer.","triggerScenarios":"Thrown at crates/tui/src/tools/shell.rs:3251 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Read stdout and stderr as separate streams/channels instead of requesting merged output for this job.","Re-run the job without the merge-streams option if separate capture is required."],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"73e0f67d83c59909b571efdfc88c4bc28c309cb1","analyzedAt":"2026-09-22T01:30:00.501Z","contentChangedAt":"2026-09-22T01:30:00.501Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}