JuliusBrussee/caveman · error

message count %d outside 1..%d

Error message

message count %d outside 1..%d

What it means

Error "message count %d outside 1..%d" thrown in JuliusBrussee/caveman.

Source

Thrown at cacheengine/cachebench/corpus.go:333

func validateCorpusWire(wire lmcacheRowWire, index int, limits CorpusLimits) (CorpusRow, error) {
	if !validBoundedText(wire.SessionID, 2048, false) || !validBoundedText(wire.Model, 512, false) {
		return CorpusRow{}, errors.New("session_id and model required")
	}
	if wire.OutputLength < 0 || math.IsNaN(wire.PreGap) || math.IsInf(wire.PreGap, 0) || wire.PreGap < 0 || wire.PreGap > maxCorpusGapSeconds {
		return CorpusRow{}, fmt.Errorf("output_length must be non-negative and pre_gap must be within 0..%d seconds", maxCorpusGapSeconds)
	}
	if len(wire.Input) == 0 || !json.Valid(wire.Input) {
		return CorpusRow{}, errors.New("input must be valid non-empty message array")
	}
	if len(wire.SessionID)+len(wire.Model)+len(wire.Input) > limits.MaxRowBytes {
		return CorpusRow{}, fmt.Errorf("row exceeds byte limit %d", limits.MaxRowBytes)
	}
	var messages []CorpusMessage
	if err := json.Unmarshal(wire.Input, &messages); err != nil {
		return CorpusRow{}, fmt.Errorf("decode input: %w", err)
	}
	if len(messages) == 0 || len(messages) > limits.MaxMessagesPerRequest {
		return CorpusRow{}, fmt.Errorf("message count %d outside 1..%d", len(messages), limits.MaxMessagesPerRequest)
	}
	for messageIndex, message := range messages {
		if err := validateCorpusMessage(message, limits); err != nil {
			return CorpusRow{}, fmt.Errorf("message %d: %w", messageIndex, err)
		}
	}
	return CorpusRow{
		RowIndex: index, SessionID: wire.SessionID, Model: wire.Model, Input: messages,
		OutputLength: wire.OutputLength, PreGap: wire.PreGap,
	}, nil
}

func validateCorpusMessage(message CorpusMessage, limits CorpusLimits) error {
	switch message.Role {
	case "system", "developer", "user", "assistant", "tool":
	default:
		return fmt.Errorf("unsupported role %q", message.Role)
	}

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Keep the message count within the allowed range.

When it happens

Trigger: Thrown at cacheengine/cachebench/corpus.go:333 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/072963aa5b0ea5fc. Report an issue: GitHub.