Creating circleci job to just lint and vet code

plugins/mongodb/mongostat.go

@@ -457,7 +457,7 @@ func NewStatLine(oldStat, newStat ServerStatus, key string, all bool, sampleSecs
 		oldStat.ExtraInfo.PageFaults != nil && newStat.ExtraInfo.PageFaults != nil {
 		returnVal.Faults = diff(*(newStat.ExtraInfo.PageFaults), *(oldStat.ExtraInfo.PageFaults), sampleSecs)
 	}
-	if !returnVal.IsMongos && oldStat.Locks != nil && oldStat.Locks != nil {
+	if !returnVal.IsMongos && oldStat.Locks != nil {
 		globalCheck, hasGlobal := oldStat.Locks["Global"]
 		if hasGlobal && globalCheck.AcquireCount != nil {
 			// This appears to be a 3.0+ server so the data in these fields do *not* refer to

plugins/rethinkdb/rethinkdb_server.go

@@ -118,7 +118,7 @@ func (s *Server) addClusterStats(acc plugins.Accumulator) error {
 	defer cursor.Close()
 	var clusterStats stats
 	if err := cursor.One(&clusterStats); err != nil {
-		return fmt.Errorf("failure to parse cluster stats, $s\n", err.Error())
+		return fmt.Errorf("failure to parse cluster stats, %s\n", err.Error())
 	}
 
 	tags := s.getDefaultTags()
@@ -146,7 +146,7 @@ func (s *Server) addMemberStats(acc plugins.Accumulator) error {
 	defer cursor.Close()
 	var memberStats stats
 	if err := cursor.One(&memberStats); err != nil {
-		return fmt.Errorf("failure to parse member stats, $s\n", err.Error())
+		return fmt.Errorf("failure to parse member stats, %s\n", err.Error())
 	}
 
 	tags := s.getDefaultTags()

plugins/system/ps/disk/disk_test.go

@@ -45,7 +45,7 @@ func TestDisk_io_counters(t *testing.T) {
 		t.Errorf("error %v", err)
 	}
 	if len(ret) == 0 {
-		t.Errorf("ret is empty", ret)
+		t.Errorf("ret is empty: %s", ret)
 	}
 	empty := DiskIOCountersStat{}
 	for part, io := range ret {