{"record":{"id":"4d67b1a5b7c4e122","repo":"grafana/k6","slug":"unsupported-log-output-s","errorCode":null,"errorMessage":"unsupported log output '%s'","messagePattern":"unsupported log output '(.+?)'","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/cmd/root.go","lineNumber":388,"sourceCode":"\tcase line == \"none\":\n\t\tc.globalState.Logger.SetOutput(io.Discard)\n\tcase strings.HasPrefix(line, \"loki\"):\n\t\tc.loggerIsRemote = true\n\t\thook, err = log.LokiFromConfigLine(c.globalState.FallbackLogger, line)\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t\tc.globalState.Flags.LogFormat = \"raw\"\n\tcase strings.HasPrefix(line, \"file\"):\n\t\thook, err = log.FileHookFromConfigLine(\n\t\t\tc.globalState.FS, c.globalState.Getwd,\n\t\t\tc.globalState.FallbackLogger, line,\n\t\t)\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\tdefault:\n\t\treturn fmt.Errorf(\"unsupported log output '%s'\", line)\n\t}\n\n\tswitch c.globalState.Flags.LogFormat {\n\tcase \"raw\":\n\t\tc.globalState.Logger.SetFormatter(&RawFormatter{})\n\t\tc.globalState.Logger.Debug(\"Logger format: RAW\")\n\tcase \"json\":\n\t\tc.globalState.Logger.SetFormatter(&logrus.JSONFormatter{})\n\t\tc.globalState.Logger.Debug(\"Logger format: JSON\")\n\tdefault:\n\t\tc.globalState.Logger.SetFormatter(&logrus.TextFormatter{\n\t\t\tForceColors: loggerForceColors, DisableColors: c.globalState.Flags.NoColor,\n\t\t})\n\t\tc.globalState.Logger.Debug(\"Logger format: TEXT\")\n\t}\n\n\tsecretsources, err := createSecretSources(c.globalState)\n\tif err != nil {","sourceCodeStart":370,"sourceCodeEnd":406,"githubUrl":"https://github.com/grafana/k6/blob/93accf6570dcd306ca5e99cc44c393ee3797761b/internal/cmd/root.go#L370-L406","documentation":"Error \"unsupported log output '%s'\" thrown in grafana/k6.","triggerScenarios":"Thrown at internal/cmd/root.go:388 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"93accf6570dcd306ca5e99cc44c393ee3797761b","analyzedAt":"2026-08-15T21:23:27.118Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}