Gauge was collected before with the same name and label values

[bobrik]

Seeing this when scraping:

An error has occurred during metrics collection:

collected metric chronos_metrics_version label:<name:"version" value:"3.0.0" > gauge:<value:1 > was collected before with the same name and label values

Commenting the following in exporter.go helps:

		case "version":
			data := element.Data()
			version, ok := data.(string)
			if !ok {
				log.Errorf(fmt.Sprintf("Bad conversion! Unexpected value \"%v\" for version\n", data))
			} else {
				gauge, _ := e.Gauges.Fetch("metrics_version", "Chronos metrics version", "version")
				gauge.WithLabelValues(version).Set(1)
				gauge.Collect(ch)
			}

[matt-deboer]

Should be fixed in release v0.2.2