Remove errors pointed out by govet

cmd/ipfs/daemon.go

@@ -169,7 +169,7 @@ func daemonFunc(req cmds.Request, res cmds.Response) {
 	managefd, _, _ := req.Option(adjustFDLimitKwd).Bool()
 	if managefd {
 		if err := fileDescriptorCheck(); err != nil {
-			log.Error("setting file descriptor limit: %s", err)
+			log.Errorf("setting file descriptor limit: %s", err)
 		}
 	}
 

cmd/ipfs/ulimit_unix.go

@@ -15,7 +15,7 @@ func init() {
 	if val := os.Getenv("IPFS_FD_MAX"); val != "" {
 		n, err := strconv.Atoi(val)
 		if err != nil {
-			log.Error("bad value for IPFS_FD_MAX: %s", err)
+			log.Errorf("bad value for IPFS_FD_MAX: %s", err)
 		} else {
 			ipfsFileDescNum = uint64(n)
 		}

commands/files/file_test.go

@@ -175,7 +175,7 @@ anotherfile
 		t.Fatalf("expected to be able to read 12 bytes from file: %s (got %d)", err, n)
 	}
 	if err := mpf.Close(); err != nil {
-		t.Fatal("should be able to close file: %s", err)
+		t.Fatalf("should be able to close file: %s", err)
 	}
 
 	// test properties of symlink created from fourth part (symlink)

merkledag/merkledag_test.go

@@ -131,7 +131,7 @@ func SubtestNodeStat(t *testing.T, n *Node) {
 	}
 
 	if expected != *actual {
-		t.Error("n.Stat incorrect.\nexpect: %s\nactual: %s", expected, actual)
+		t.Errorf("n.Stat incorrect.\nexpect: %s\nactual: %s", expected, actual)
 	} else {
 		fmt.Printf("n.Stat correct: %s\n", actual)
 	}

mfs/ops.go

@@ -162,7 +162,7 @@ func Mkdir(r *Root, pth string, mkparents bool, flush bool) error {
 func Lookup(r *Root, path string) (FSNode, error) {
 	dir, ok := r.GetValue().(*Directory)
 	if !ok {
-		log.Error("root not a dir: %#v", r.GetValue())
+		log.Errorf("root not a dir: %#v", r.GetValue())
 		return nil, errors.New("root was not a directory")
 	}
 

mfs/system.go

@@ -265,7 +265,7 @@ func (np *Republisher) Run() {
 				pubnowresp <- struct{}{}
 			}
 			if err != nil {
-				log.Error("republishRoot error: %s", err)
+				log.Errorf("republishRoot error: %s", err)
 			}
 
 		case <-np.ctx.Done():

routing/dht/dht_net.go

@@ -64,8 +64,6 @@ func (dht *IpfsDHT) handleNewMessage(s inet.Stream) {
 			return
 		}
 	}
-
-	return
 }
 
 // sendRequest sends out a request, but also makes sure to

routing/dht/dht_test.go

@@ -214,7 +214,7 @@ func TestProvides(t *testing.T) {
 			t.Fatal(err)
 		}
 		if !bytes.Equal(bits.GetValue(), v) {
-			t.Fatal("didn't store the right bits (%s, %s)", k, v)
+			t.Fatalf("didn't store the right bits (%s, %s)", k, v)
 		}
 	}
 
@@ -289,7 +289,7 @@ func waitForWellFormedTables(t *testing.T, dhts []*IpfsDHT, minPeers, avgPeers i
 
 func printRoutingTables(dhts []*IpfsDHT) {
 	// the routing tables should be full now. let's inspect them.
-	fmt.Println("checking routing table of %d", len(dhts))
+	fmt.Printf("checking routing table of %d\n", len(dhts))
 	for _, dht := range dhts {
 		fmt.Printf("checking routing table of %s\n", dht.self)
 		dht.routingTable.Print()
@@ -487,7 +487,7 @@ func TestProvidesMany(t *testing.T) {
 			t.Fatal(err)
 		}
 		if !bytes.Equal(bits.GetValue(), v) {
-			t.Fatal("didn't store the right bits (%s, %s)", k, v)
+			t.Fatalf("didn't store the right bits (%s, %s)", k, v)
 		}
 
 		t.Logf("announcing provider for %s", k)

unixfs/io/dagreader.go

@@ -279,7 +279,6 @@ func (dr *DagReader) Seek(offset int64, whence int) (int64, error) {
 	default:
 		return 0, errors.New("invalid whence")
 	}
-	return 0, nil
 }
 
 // readSeekNopCloser wraps a bytes.Reader to implement ReadSeekCloser