{"execution_id":"37a1b938-ff81-4015-b8cb-4e06e3ed7025","status":"failed","config_path":"pipelines/inline/37a1b938-ff81-4015-b8cb-4e06e3ed7025.yaml","started_at":"2026-04-21T17:33:26.455001","completed_at":"2026-04-21T17:43:15.478435","duration_seconds":589.023434,"results":{"steps":[{"result":{"result":{"reason":"Dataset already exists","skipped":true,"generated":false,"output_dir":"/app/datasets/exp_i03_trial_quality_only_asset_spotbrent_60_ema20return_20260403"},"status":"completed","streaming":true,"execution_id":"45c44230-dd85-4758-ab69-621ac6d9e386","service_execution_id":"45c44230-dd85-4758-ab69-621ac6d9e386","pipeline_execution_id":"37a1b938-ff81-4015-b8cb-4e06e3ed7025"},"status":"success","step_name":"01_dataset","step_type":"dataset","started_at_iso":"2026-04-21T17:33:30.211393","duration_seconds":0.057378},{"error":"Optuna optimization failed: Optimization failed: Stage 2 requires at least 30 Stage 1 candidate(s) to start, but only 4 candidate(s) were available.","status":"failed","step_name":"02_tuning","step_type":"tuning","started_at_iso":"2026-04-21T17:33:31.097926"}],"started_at":"2026-04-21T17:33:27.796881","completed_at":"2026-04-21T17:43:14.395676","pipeline_name":"spotbrent_60_prod_new","total_duration_seconds":0.057378},"error":"Pipeline failed: 1 step(s) failed: 02_tuning"}