run golangci-lint and apply suggested fixes

replication/driver/errorclass_enumer.go

@@ -6,9 +6,9 @@ import (
 	"fmt"
 )
 
-const _errorClassName = "errorClassUnknownerrorClassPermanenterrorClassTemporaryConnectivityRelated"
+const _errorClassName = "errorClassPermanenterrorClassTemporaryConnectivityRelated"
 
-var _errorClassIndex = [...]uint8{0, 17, 36, 74}
+var _errorClassIndex = [...]uint8{0, 19, 57}
 
 func (i errorClass) String() string {
 	if i < 0 || i >= errorClass(len(_errorClassIndex)-1) {
@@ -17,12 +17,11 @@ func (i errorClass) String() string {
 	return _errorClassName[_errorClassIndex[i]:_errorClassIndex[i+1]]
 }
 
-var _errorClassValues = []errorClass{0, 1, 2}
+var _errorClassValues = []errorClass{0, 1}
 
 var _errorClassNameToValueMap = map[string]errorClass{
-	_errorClassName[0:17]:  0,
-	_errorClassName[17:36]: 1,
-	_errorClassName[36:74]: 2,
+	_errorClassName[0:19]:  0,
+	_errorClassName[19:57]: 1,
 }
 
 // errorClassString retrieves an enum value from the enum constants string name.

replication/driver/replication_driver.go

@@ -339,7 +339,7 @@ func (a *attempt) do(ctx context.Context, prev *attempt) {
 				l := fmt.Sprintf("  %s => %v", i.cur.fs.ReportInfo().Name, prevNames)
 				inconsistencyLines = append(inconsistencyLines, l)
 			}
-			fmt.Fprintf(&msg, strings.Join(inconsistencyLines, "\n"))
+			fmt.Fprint(&msg, strings.Join(inconsistencyLines, "\n"))
 			now := time.Now()
 			a.planErr = newTimedError(errors.New(msg.String()), now)
 			a.fss = nil
@@ -552,17 +552,11 @@ func (s *step) report() *report.StepReport {
 	return r
 }
 
-type stepErrorReport struct {
-	err  *timedError
-	step int
-}
-
 //go:generate enumer -type=errorClass
 type errorClass int
 
 const (
-	errorClassUnknown errorClass = iota
-	errorClassPermanent
+	errorClassPermanent errorClass = iota
 	errorClassTemporaryConnectivityRelated
 )
 

replication/driver/replication_driver_debug.go

@@ -13,6 +13,7 @@ func init() {
 	}
 }
 
+//nolint[:deadcode,unused]
 func debug(format string, args ...interface{}) {
 	if debugEnabled {
 		fmt.Fprintf(os.Stderr, "repl: driver: %s\n", fmt.Sprintf(format, args...))
@@ -21,6 +22,7 @@ func debug(format string, args ...interface{}) {
 
 type debugFunc func(format string, args ...interface{})
 
+//nolint[:deadcode,unused]
 func debugPrefix(prefixFormat string, prefixFormatArgs ...interface{}) debugFunc {
 	prefix := fmt.Sprintf(prefixFormat, prefixFormatArgs...)
 	return func(format string, args ...interface{}) {

replication/driver/replication_driver_test.go

@@ -166,14 +166,14 @@ func TestReplication(t *testing.T) {
 	reports := make([]*report.Report, len(fireAt))
 	for i := range fireAt {
 		sleepUntil := begin.Add(fireAt[i])
-		time.Sleep(sleepUntil.Sub(time.Now()))
+		time.Sleep(time.Until(sleepUntil))
 		reports[i] = getReport()
 		// uncomment for viewing non-diffed results
 		// t.Logf("report @ %6.4f:\n%s", fireAt[i].Seconds(), pretty.Sprint(reports[i]))
 	}
 	waitBegin := time.Now()
 	wait(true)
-	waitDuration := time.Now().Sub(waitBegin)
+	waitDuration := time.Since(waitBegin)
 	assert.True(t, waitDuration < 10*time.Millisecond, "%v", waitDuration) // and that's gratious
 
 	prev, err := json.Marshal(reports[0])

replication/driver/replication_stepqueue_test.go

@@ -96,7 +96,7 @@ func TestPqConcurrent(t *testing.T) {
 				pos := atomic.AddUint32(&globalCtr, 1)
 				t := time.Unix(int64(step), 0)
 				done := q.WaitReady(fs, t)
-				wakeAt := time.Now().Sub(begin)
+				wakeAt := time.Since(begin)
 				time.Sleep(sleepTimePerStep)
 				done()
 				recs = append(recs, record{fs, step, pos, wakeAt})