{"execution_id":"2ae9d77d-0fa4-4049-bbfe-b934aed236e8","status":"failed","config_path":"pipelines/inline/2ae9d77d-0fa4-4049-bbfe-b934aed236e8.yaml","started_at":"2026-04-19T23:37:04.004892","completed_at":"2026-04-19T23:37:12.650180","duration_seconds":8.645288,"results":{"steps":[{"result":{"result":{"reason":"Dataset already exists","skipped":true,"generated":false,"output_dir":"/app/datasets/autoresearch/btcusdtp_60_ema20return_104f9b4d9acb"},"status":"completed","streaming":true,"execution_id":"3505014c-03c7-448e-8b42-7947bbbef784","service_execution_id":"3505014c-03c7-448e-8b42-7947bbbef784","pipeline_execution_id":"2ae9d77d-0fa4-4049-bbfe-b934aed236e8"},"status":"success","step_name":"01_dataset","step_type":"dataset","started_at_iso":"2026-04-19T23:37:07.199833","duration_seconds":0.142214},{"error":"Optuna optimization failed: Optimization failed: Another study with name 'Stage 1 AR_BTC_60_manualseed_20260420_000000' already exists. Please specify a different name, or reuse the existing one by setting `load_if_exists` (for Python API) or `--skip-if-exists` flag (for CLI).","status":"failed","step_name":"02_tuning","step_type":"tuning","started_at_iso":"2026-04-19T23:37:08.157919"}],"started_at":"2026-04-19T23:37:04.896525","completed_at":"2026-04-19T23:37:12.461204","pipeline_name":"ar_btc_60_manualseed_20260420_000000","total_duration_seconds":0.142214},"error":"Pipeline failed: 1 step(s) failed: 02_tuning"}