accounts,cmd,console,les,metrics: refactor some errors checked by (ST1005) go-staticcheck

accounts/abi/bind/backends/simulated.go

@@ -846,7 +846,7 @@ func (b *SimulatedBackend) AdjustTime(adjustment time.Duration) error {
 	defer b.mu.Unlock()
 
 	if len(b.pendingBlock.Transactions()) != 0 {
-		return errors.New("Could not adjust time on non-empty block")
+		return errors.New("could not adjust time on non-empty block")
 	}
 	// Get the last block
 	block := b.blockchain.GetBlockByHash(b.pendingBlock.ParentHash())

accounts/abi/pack.go

@@ -57,7 +57,7 @@ func packElement(t Type, reflectValue reflect.Value) ([]byte, error) {
 			reflectValue = mustArrayToByteSlice(reflectValue)
 		}
 		if reflectValue.Type() != reflect.TypeOf([]byte{}) {
-			return []byte{}, errors.New("Bytes type is neither slice nor array")
+			return []byte{}, errors.New("bytes type is neither slice nor array")
 		}
 		return packBytesSlice(reflectValue.Bytes(), reflectValue.Len()), nil
 	case FixedBytesTy, FunctionTy:
@@ -66,7 +66,7 @@ func packElement(t Type, reflectValue reflect.Value) ([]byte, error) {
 		}
 		return common.RightPadBytes(reflectValue.Bytes(), 32), nil
 	default:
-		return []byte{}, fmt.Errorf("Could not pack element, unknown type: %v", t.T)
+		return []byte{}, fmt.Errorf("could not pack element, unknown type: %v", t.T)
 	}
 }
 

accounts/abi/reflect.go

@@ -134,7 +134,7 @@ func setSlice(dst, src reflect.Value) error {
 		dst.Set(slice)
 		return nil
 	}
-	return errors.New("Cannot set slice, destination not settable")
+	return errors.New("cannot set slice, destination not settable")
 }
 
 func setArray(dst, src reflect.Value) error {
@@ -155,15 +155,15 @@ func setArray(dst, src reflect.Value) error {
 		dst.Set(array)
 		return nil
 	}
-	return errors.New("Cannot set array, destination not settable")
+	return errors.New("cannot set array, destination not settable")
 }
 
 func setStruct(dst, src reflect.Value) error {
 	for i := 0; i < src.NumField(); i++ {
 		srcField := src.Field(i)
 		dstField := dst.Field(i)
 		if !dstField.IsValid() || !srcField.IsValid() {
-			return fmt.Errorf("Could not find src field: %v value: %v in destination", srcField.Type().Name(), srcField)
+			return fmt.Errorf("could not find src field: %v value: %v in destination", srcField.Type().Name(), srcField)
 		}
 		if err := set(dstField, srcField); err != nil {
 			return err

cmd/clef/main.go

@@ -581,6 +581,7 @@ func accountImport(c *cli.Context) error {
 		return err
 	}
 	if first != second {
+		//lint:ignore ST1005 This is a message for the user
 		return errors.New("Passwords do not match")
 	}
 	acc, err := internalApi.ImportRawKey(hex.EncodeToString(crypto.FromECDSA(pKey)), first)

cmd/devp2p/discv4cmd.go

@@ -236,7 +236,7 @@ func discv4Crawl(ctx *cli.Context) error {
 func discv4Test(ctx *cli.Context) error {
 	// Configure test package globals.
 	if !ctx.IsSet(remoteEnodeFlag.Name) {
-		return fmt.Errorf("Missing -%v", remoteEnodeFlag.Name)
+		return fmt.Errorf("missing -%v", remoteEnodeFlag.Name)
 	}
 	v4test.Remote = ctx.String(remoteEnodeFlag.Name)
 	v4test.Listen1 = ctx.String(testListen1Flag.Name)

cmd/devp2p/internal/ethtest/snap.go

@@ -683,7 +683,7 @@ func (s *Suite) snapGetTrieNodes(t *utesting.T, tc *trieNodesTest) error {
 	hash := make([]byte, 32)
 	trienodes := res.Nodes
 	if got, want := len(trienodes), len(tc.expHashes); got != want {
-		return fmt.Errorf("wrong trienode count, got %d, want %d\n", got, want)
+		return fmt.Errorf("wrong trienode count, got %d, want %d", got, want)
 	}
 	for i, trienode := range trienodes {
 		hasher.Reset()

cmd/faucet/faucet.go

@@ -248,7 +248,7 @@ func newFaucet(genesis *core.Genesis, port int, enodes []*enode.Node, network ui
 
 	lesBackend, err := les.New(stack, &cfg)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to register the Ethereum service: %w", err)
+		return nil, fmt.Errorf("failed to register the Ethereum service: %w", err)
 	}
 
 	// Assemble the ethstats monitoring and reporting service'

cmd/utils/cmd.go

@@ -460,7 +460,7 @@ func ImportLDBData(db ethdb.Database, f string, startIndex int64, interrupt chan
 		case OpBatchAdd:
 			batch.Put(key, val)
 		default:
-			return fmt.Errorf("unknown op %d\n", op)
+			return fmt.Errorf("unknown op %d", op)
 		}
 		if batch.ValueSize() > ethdb.IdealBatchSize {
 			if err := batch.Write(); err != nil {

console/bridge.go

@@ -78,7 +78,7 @@ func (b *bridge) NewAccount(call jsre.Call) (goja.Value, error) {
 			return nil, err
 		}
 		if password != confirm {
-			return nil, errors.New("passwords don't match!")
+			return nil, errors.New("passwords don't match")
 		}
 	// A single string password was specified, use that
 	case len(call.Arguments) == 1 && call.Argument(0).ToString() != nil:

les/benchmark.go

@@ -338,7 +338,7 @@ func (h *serverHandler) measure(setup *benchmarkSetup, count int) error {
 	case <-h.closeCh:
 		clientPipe.Close()
 		serverPipe.Close()
-		return errors.New("Benchmark cancelled")
+		return errors.New("benchmark cancelled")
 	}
 
 	setup.totalTime += time.Duration(mclock.Now() - start)

les/peer.go

@@ -1000,7 +1000,7 @@ func (p *clientPeer) Handshake(td *big.Int, head common.Hash, headNum uint64, ge
 		}
 	}
 	if recentTx != txIndexUnlimited && p.version < lpv4 {
-		return errors.New("Cannot serve old clients without a complete tx index")
+		return errors.New("cannot serve old clients without a complete tx index")
 	}
 	// Note: clientPeer.headInfo should contain the last head announced to the client by us.
 	// The values announced in the handshake are dummy values for compatibility reasons and should be ignored.

les/peer_test.go

@@ -143,7 +143,7 @@ func TestHandshake(t *testing.T) {
 				return err
 			}
 			if reqType != announceTypeSigned {
-				return errors.New("Expected announceTypeSigned")
+				return errors.New("expected announceTypeSigned")
 			}
 			return nil
 		})

les/vflux/client/valuetracker.go

@@ -257,7 +257,7 @@ func (vt *ValueTracker) loadFromDb(mapping []string) error {
 	}
 	if version != vtVersion {
 		log.Error("Unknown ValueTracker version", "stored", version, "current", nvtVersion)
-		return fmt.Errorf("Unknown ValueTracker version %d (current version is %d)", version, vtVersion)
+		return fmt.Errorf("unknown ValueTracker version %d (current version is %d)", version, vtVersion)
 	}
 	var vte valueTrackerEncV1
 	if err := rlp.Decode(r, &vte); err != nil {
@@ -295,7 +295,7 @@ loop:
 	} else {
 		if vte.RefBasketMapping >= uint(len(vt.mappings)) {
 			log.Error("Unknown request basket mapping", "stored", vte.RefBasketMapping, "current", vt.currentMapping)
-			return fmt.Errorf("Unknown request basket mapping %d (current version is %d)", vte.RefBasketMapping, vt.currentMapping)
+			return fmt.Errorf("unknown request basket mapping %d (current version is %d)", vte.RefBasketMapping, vt.currentMapping)
 		}
 		vt.refBasket.basket = vte.RefBasket.convertMapping(vt.mappings[vte.RefBasketMapping], mapping, vt.initRefBasket)
 	}

metrics/disk_nop.go

@@ -23,5 +23,5 @@ import "errors"
 
 // ReadDiskStats retrieves the disk IO stats belonging to the current process.
 func ReadDiskStats(stats *DiskStats) error {
-	return errors.New("Not implemented")
+	return errors.New("not implemented")
 }

metrics/gauge_float64_test.go

@@ -36,7 +36,7 @@ func TestGaugeFloat64Snapshot(t *testing.T) {
 	g.Update(47.0)
 	snapshot := g.Snapshot()
 	g.Update(float64(0))
-	if v := snapshot.Value(); 47.0 != v {
+	if v := snapshot.Value(); v != 47.0 {
 		t.Errorf("g.Value(): 47.0 != %v\n", v)
 	}
 }
@@ -45,7 +45,7 @@ func TestGetOrRegisterGaugeFloat64(t *testing.T) {
 	r := NewRegistry()
 	NewRegisteredGaugeFloat64("foo", r).Update(47.0)
 	t.Logf("registry: %v", r)
-	if g := GetOrRegisterGaugeFloat64("foo", r).Snapshot(); 47.0 != g.Value() {
+	if g := GetOrRegisterGaugeFloat64("foo", r).Snapshot(); g.Value() != 47.0 {
 		t.Fatal(g)
 	}
 }