Do not crash on most possibly minor directory enumeration problem.

main.go

@@ -31,7 +31,7 @@ var (
 	junkCounter  byte = 0 // to prevent any compiler optimizations
 )
 
-var version = "1.0"
+var version = "1.1"
 
 type volume struct {
 	path        string
@@ -282,7 +282,9 @@ func processVolume(volume *volume, onlyStats bool, stats *lockStats) error {
 				dir.dir.Close()
 				continue
 			} else if err != nil {
-				return err
+				log.WithFields(log.Fields{"Directory": dir.path, "Error": err}).Warn("Failed to enumerate directory. Skipping.")
+				dir.dir.Close()
+				continue
 			}
 			dir.entriesBatch = names
 		}