{"record":{"id":"e8df93fa51460ae6","repo":"plandex-ai/plandex","slug":"error-building-validate-loop-w","errorCode":null,"errorMessage":"error building validate loop: %w","messagePattern":"error building validate loop: %w","errorType":"http","errorClass":null,"httpStatus":500,"severity":"error","filePath":"app/server/model/plan/build_race.go","lineNumber":258,"sourceCode":"\t\t\tproposedContent:      proposedContent,\n\t\t\tdesc:                 desc,\n\t\t\treasons:              reasons,\n\t\t\tsyntaxErrors:         syntaxErrors,\n\t\t\tinitialPhaseOnStream: onInitialStream,\n\t\t\tisInitial:            true,\n\t\t\tsessionId:            sessionId,\n\t\t})\n\n\t\tfileState.builderRun.AutoApplyValidationFinishedAt = time.Now()\n\n\t\tif err != nil {\n\t\t\tif errors.Is(err, context.Canceled) {\n\t\t\t\tlog.Printf(\"Context canceled during buildValidate\")\n\t\t\t\treturn\n\t\t\t}\n\n\t\t\tlog.Printf(\"buildRace - validation loop failed: %v\", err)\n\t\t\tsendErr(fmt.Errorf(\"error building validate loop: %w\", err))\n\t\t} else {\n\t\t\tlog.Printf(\"buildRace - validation loop finished, valid: %v\", validateResult.valid)\n\t\t\tif validateResult.valid {\n\t\t\t\tlog.Printf(\"buildRace - validation loop succeeded, valid: %v\", validateResult.valid)\n\t\t\t\tsendRes(raceResult{content: validateResult.updated, valid: validateResult.valid})\n\t\t\t} else {\n\t\t\t\tlog.Printf(\"buildRace - validation loop failed, valid: %v\", validateResult.valid)\n\t\t\t\tsendErr(fmt.Errorf(\"validation loop failed: %s\", validateResult.problem))\n\t\t\t}\n\t\t}\n\t}()\n\n\terrs := []error{}\n\terrChNumReceived := 0\n\n\tfor {\n\t\tselect {\n\t\tcase <-buildCtx.Done():","sourceCodeStart":240,"sourceCodeEnd":276,"githubUrl":"https://github.com/plandex-ai/plandex/blob/e2d772072efadbe41d2946d97d79be55532dbab5/app/server/model/plan/build_race.go#L240-L276","documentation":"This error wraps a real error returned by buildValidateLoop during the build race. The loop validates proposed edits and re-streams/retries; any non-cancellation error (LLM stream failure, apply error, parse error) is wrapped with %w so callers can still errors.Is against the underlying cause. context.Canceled is deliberately not reported.","triggerScenarios":"buildValidateLoop returns an error that is not context.Canceled — e.g. the LLM stream fails mid-validation, an edit fails to apply to the proposed content, or syntax validation returns a hard error. Triggered whenever buildRace runs its validation path (including fallback whole-file builds).","commonSituations":"Model/API failures during auto-apply validation, malformed edit markers the apply step cannot parse, or a context deadline exceeded that isn't the parent cancel (wrapped so it no longer matches context.Canceled/DeadlineExceeded at top level).","solutions":["Inspect the wrapped cause with errors.Is/errors.As on the returned error (the %w chain preserves the original)","Check provider/API logs for stream failures around the AutoApplyValidationStartedAt timestamp","Retry the build; transient stream errors are common and the race may succeed on a new attempt","If persistent, fix the underlying apply/validation bug in buildValidateLoop (malformed markers, nil nodes)"],"exampleFix":"// before\nif errors.Is(err, context.Canceled) { return }\nlog.Printf(\"failed: %v\", err)\n// after\nif errors.Is(err, context.Canceled) { return }\nvar netErr net.Error\nif errors.As(err, &netErr) && netErr.Timeout() {\n    // transient - retry the build instead of surfacing to user\n    return retryBuild()\n}","handlingStrategy":"retry","validationCode":"if activeBuild == nil || activeBuild.FileContent == \"\" {\n    return fmt.Errorf(\"no build content to validate\")\n}\nif buildCtx.Err() != nil {\n    return buildCtx.Err() // don't start validation on a canceled context\n}","typeGuard":"func isRetryableValidationError(err error) bool {\n    return err != nil && !errors.Is(err, context.Canceled) &&\n        (errors.Is(err, io.ErrUnexpectedEOF) || errors.As(err, new(net.Error)) || errors.Is(err, context.DeadlineExceeded))\n}","tryCatchPattern":"res, err := fileState.buildRace(...)\nif err != nil {\n    if errors.Is(err, context.Canceled) {\n        return nil // user canceled, expected\n    }\n    var wrapped error\n    if errors.As(err, &wrapped) && isRetryableValidationError(wrapped) {\n        return retryBuild() // transient stream failure\n    }\n    return fmt.Errorf(\"build validation failed: %w\", err)\n}","preventionTips":["Always errors.Is/errors.As the wrapped error instead of string matching","Treat context.Canceled as a no-op, never surface it as a user-facing failure","Retry transient stream errors with backoff before giving up the build","Keep validation loop steps idempotent so retries are safe"],"tags":["go","validation","llm","streaming"],"backgroundTag":"validation-loop-failed","analyzedSha":"e2d772072efadbe41d2946d97d79be55532dbab5","analyzedAt":"2026-09-05T20:56:53.631Z","contentChangedAt":"2026-09-05T20:56:53.631Z","schemaVersion":2},"datasetVersion":"2026-09-12T22:17:10.623Z"}