fix: linter fixes (#3697)

pkg/log/formatter_test.go

@@ -36,55 +36,55 @@ func (p pointErr) MarshalText() ([]byte, error) {
 // marshalerTest expect to result in the MarshalLog() value when logged.
 type marshalerTest struct{ val string }
 
-func (_ marshalerTest) MarshalLog() interface{} {
+func (marshalerTest) MarshalLog() interface{} {
 	return struct{ Inner string }{"I am a log.Marshaler"}
 }
-func (_ marshalerTest) String() string {
+func (marshalerTest) String() string {
 	return "String(): you should not see this"
 }
-func (_ marshalerTest) Error() string {
+func (marshalerTest) Error() string {
 	return "Error(): you should not see this"
 }
 
 // nolint:errname
 // marshalerPanicTest expect this to result in a panic when logged.
 type marshalerPanicTest struct{ val string }
 
-func (_ marshalerPanicTest) MarshalLog() interface{} {
+func (marshalerPanicTest) MarshalLog() interface{} {
 	panic("marshalerPanicTest")
 }
 
 // nolint:errname
 // stringerTest expect this to result in the String() value when logged.
 type stringerTest struct{ val string }
 
-func (_ stringerTest) String() string {
+func (stringerTest) String() string {
 	return "I am a fmt.Stringer"
 }
-func (_ stringerTest) Error() string {
+func (stringerTest) Error() string {
 	return "Error(): you should not see this"
 }
 
 // stringerPanicTest expect this to result in a panic when logged.
 type stringerPanicTest struct{ val string }
 
-func (_ stringerPanicTest) String() string {
+func (stringerPanicTest) String() string {
 	panic("stringerPanicTest")
 }
 
 // nolint:errname
 // errorTest expect this to result in the Error() value when logged.
 type errorTest struct{ val string }
 
-func (_ errorTest) Error() string {
+func (errorTest) Error() string {
 	return "I am an error"
 }
 
 // nolint:errname
 // errorPanicTest expect this to result in a panic when logged.
 type errorPanicTest struct{ val string }
 
-func (_ errorPanicTest) Error() string {
+func (errorPanicTest) Error() string {
 	panic("errorPanicTest")
 }
 

pkg/manifest/mantaray/marshal_test.go

@@ -10,7 +10,6 @@ import (
 	"encoding/hex"
 	"errors"
 	"math/rand"
-	mrand "math/rand"
 	"reflect"
 	"testing"
 
@@ -50,7 +49,7 @@ type NodeEntry struct {
 
 // nolint:gochecknoinits
 func init() {
-	obfuscationKeyFn = mrand.Read
+	obfuscationKeyFn = rand.Read
 }
 
 func TestVersion01(t *testing.T) {

pkg/statestore/leveldb/leveldb.go

@@ -12,10 +12,10 @@ import (
 
 	"github.com/ethersphere/bee/pkg/log"
 	"github.com/ethersphere/bee/pkg/storage"
-	"github.com/syndtr/goleveldb/leveldb"
+
 	ldberr "github.com/syndtr/goleveldb/leveldb/errors"
 
-	ldb "github.com/syndtr/goleveldb/leveldb"
+	"github.com/syndtr/goleveldb/leveldb"
 	ldbs "github.com/syndtr/goleveldb/leveldb/storage"
 
 	"github.com/syndtr/goleveldb/leveldb/util"
@@ -33,7 +33,7 @@ type Store struct {
 }
 
 func NewInMemoryStateStore(l log.Logger) (*Store, error) {
-	ldb, err := ldb.Open(ldbs.NewMemStorage(), nil)
+	ldb, err := leveldb.Open(ldbs.NewMemStorage(), nil)
 	if err != nil {
 		return nil, err
 	}