Fix error formatting

Author: 0xThiebaut

report/metrics_file_descriptors.go

@@ -37,7 +37,7 @@ func FDUsageReporter(logger *logp.Logger, processStats *process.Stats) func(_ mo
 
 		open, hardLimit, softLimit, err := getFDUsage(processStats)
 		if err != nil {
-			logger.Error("Error while retrieving FD information: %v", err)
+			logger.Errorf("Error while retrieving FD information: %s", err)
 			return
 		}
 

report/metrics_handles.go

@@ -38,15 +38,15 @@ var (
 func SetupWindowsHandlesMetrics(logger *logp.Logger, reg *monitoring.Registry) {
 	beatProcessSysInfo, err := sysinfo.Self()
 	if err != nil {
-		logger.Error("Error while getting own process info: %v", err)
+		logger.Errorf("Error while getting own process info: %s", err)
 		logger.Error(fileHandlesNotReported)
 		return
 	}
 
 	var ok bool
 	handleCounter, ok = beatProcessSysInfo.(types.OpenHandleCounter)
 	if !ok {
-		logger.Error("Process does not implement types.OpenHandleCounter: %v", beatProcessSysInfo)
+		logger.Errorf("Process does not implement types.OpenHandleCounter: %v", beatProcessSysInfo)
 		logger.Error(fileHandlesNotReported)
 		return
 	}
@@ -61,7 +61,7 @@ func openHandlesReporter(logger *logp.Logger) func(_ monitoring.Mode, V monitori
 
 		n, err := handleCounter.OpenHandleCount()
 		if err != nil {
-			logger.Error("Error while retrieving the number of open file handles: %v", err)
+			logger.Errorf("Error while retrieving the number of open file handles: %s", err)
 			return
 		}
 		monitoring.ReportInt(V, "open", int64(n))