Update golangci-lint to 1.36.0

In the previous version, 1.18.0, the "megacheck" linter paid attention
to the '//lint:ignore' comment, but that is no longer there.

Newer version pay attention to '//nolint:<linter>,<linter>,...'
comments, optionally followed by a "second" comment introduced by '//'.

Update the directives to use this style.

This is related to prometheus/blackbox_exporter#738 and
prometheus/blackbox_exporter#745.
Signed-off-by: Marcelo E. Magallon <marcelo.magallon@grafana.com>

Makefile.common

@@ -83,7 +83,7 @@ PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_
 
 GOLANGCI_LINT :=
 GOLANGCI_LINT_OPTS ?=
-GOLANGCI_LINT_VERSION ?= v1.18.0
+GOLANGCI_LINT_VERSION ?= v1.36.0
 # golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
 # windows isn't included here because of the path separator being different.
 ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))

promql/engine.go

@@ -1571,7 +1571,7 @@ func getPointSlice(sz int) []Point {
 }
 
 func putPointSlice(p []Point) {
-	//lint:ignore SA6002 relax staticcheck verification.
+	//nolint:staticcheck // Ignore SA6002 relax staticcheck verification.
 	pointPool.Put(p[:0])
 }
 

tsdb/head.go

@@ -551,7 +551,7 @@ Outer:
 					h.lastSeriesID.Store(s.Ref)
 				}
 			}
-			//lint:ignore SA6002 relax staticcheck verification.
+			//nolint:staticcheck // Ignore SA6002 relax staticcheck verification.
 			seriesPool.Put(v)
 		case []record.RefSample:
 			samples := v
@@ -584,7 +584,7 @@ Outer:
 				}
 				samples = samples[m:]
 			}
-			//lint:ignore SA6002 relax staticcheck verification.
+			//nolint:staticcheck // Ignore SA6002 relax staticcheck verification.
 			samplesPool.Put(v)
 		case []tombstones.Stone:
 			for _, s := range v {
@@ -599,7 +599,7 @@ Outer:
 					h.tombstones.AddInterval(s.Ref, itv)
 				}
 			}
-			//lint:ignore SA6002 relax staticcheck verification.
+			//nolint:staticcheck // Ignore SA6002 relax staticcheck verification.
 			tstonesPool.Put(v)
 		default:
 			panic(fmt.Errorf("unexpected decoded type: %T", d))
@@ -1107,7 +1107,7 @@ func (h *Head) getAppendBuffer() []record.RefSample {
 }
 
 func (h *Head) putAppendBuffer(b []record.RefSample) {
-	//lint:ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
+	//nolint:staticcheck // Ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
 	h.appendPool.Put(b[:0])
 }
 
@@ -1120,7 +1120,7 @@ func (h *Head) getSeriesBuffer() []*memSeries {
 }
 
 func (h *Head) putSeriesBuffer(b []*memSeries) {
-	//lint:ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
+	//nolint:staticcheck // Ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
 	h.seriesPool.Put(b[:0])
 }
 
@@ -1133,7 +1133,7 @@ func (h *Head) getBytesBuffer() []byte {
 }
 
 func (h *Head) putBytesBuffer(b []byte) {
-	//lint:ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
+	//nolint:staticcheck // Ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
 	h.bytesPool.Put(b[:0])
 }
 

tsdb/wal.go

@@ -890,19 +890,19 @@ func (r *walReader) Read(
 				if seriesf != nil {
 					seriesf(v)
 				}
-				//lint:ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
+				//nolint:staticcheck // Ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
 				seriesPool.Put(v[:0])
 			case []record.RefSample:
 				if samplesf != nil {
 					samplesf(v)
 				}
-				//lint:ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
+				//nolint:staticcheck // Ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
 				samplePool.Put(v[:0])
 			case []tombstones.Stone:
 				if deletesf != nil {
 					deletesf(v)
 				}
-				//lint:ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
+				//nolint:staticcheck // Ignore SA6002 safe to ignore and actually fixing it has some performance penalty.
 				deletePool.Put(v[:0])
 			default:
 				level.Error(r.logger).Log("msg", "unexpected data type")