diff --git a/test/utils/jsonloganalyzer.go b/test/utils/jsonloganalyzer.go
index d24a7222..c6ae8396 100644
--- a/test/utils/jsonloganalyzer.go
+++ b/test/utils/jsonloganalyzer.go
@@ -28,11 +28,11 @@ func NewJsonLogAnalyzer() *JsonLogAnalyzer {
 	}
 }
 
-func (r *JsonLogAnalyzer) AddGroup(analyzers ...*JsonLogMatcher) {
+func (a *JsonLogAnalyzer) AddGroup(analyzers ...*JsonLogMatcher) {
 	r.Matchers = append(r.Matchers, analyzers)
 }
 
-func (r *JsonLogAnalyzer) OnStop(fn func()) {
+func (a *JsonLogAnalyzer) OnStop(fn func()) {
 	r.OnStopFn = fn
 }
 
@@ -57,10 +57,10 @@ func (a *JsonLogAnalyzer) Reset() {
 }
 
 func (a *JsonLogAnalyzer) HandleLine(line string) {
-	//fmt.Printf("Got line: %s\n", line)
-	//defer func() {
+	// fmt.Printf("Got line: %s\n", line)
+	// defer func() {
 	//	fmt.Printf("analyzer.HandleLine done: ind=%d fin=%v err=%v\n", a.Index, a.finished, a.err)
-	//}()
+	// }()
 	if a.finished {
 		return
 	}
@@ -156,14 +156,14 @@ func NewJsonLogMatcher(steps ...*MatcherStep) *JsonLogMatcher {
 	}
 }
 
-func (m *JsonLogMatcher) HandleRecord(r JsonLogRecord) {
+func (m *JsonLogMatcher) HandleRecord(_ JsonLogRecord) {
 }
 
 func (m *JsonLogMatcher) HandleLine(line string) {
-	//fmt.Printf("Matcher Got line: %s\n", line)
-	//defer func() {
+	// fmt.Printf("Matcher Got line: %s\n", line)
+	// defer func() {
 	//	fmt.Printf("matcher.HandleLine done: ind=%d fin=%v err=%v\n", m.Index, m.finished, m.err)
-	//}()
+	// }()
 	defer func() {
 		e := recover()
 		if e != nil {
@@ -259,7 +259,7 @@ func (matcher *FinishAllMatchersSuccessfullyMatcher) Match(actual interface{}) (
 	return matcher.finished && matcher.err == nil, nil
 }
 
-func (matcher *FinishAllMatchersSuccessfullyMatcher) FailureMessage(actual interface{}) (message string) {
+func (matcher *FinishAllMatchersSuccessfullyMatcher) FailureMessage(_ interface{}) (message string) {
 	msgs := []string{}
 	if !matcher.finished {
 		msgs = append(msgs, "is finished")
@@ -270,7 +270,7 @@ func (matcher *FinishAllMatchersSuccessfullyMatcher) FailureMessage(actual inter
 	return fmt.Sprintf("Expected JsonLogAnalyzer %s", strings.Join(msgs, " and "))
 }
 
-func (matcher *FinishAllMatchersSuccessfullyMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+func (matcher *FinishAllMatchersSuccessfullyMatcher) NegatedFailureMessage(_ interface{}) (message string) {
 	msgs := []string{}
 	if matcher.finished {
 		msgs = append(msgs, "is not finished")
diff --git a/test/utils/prometheus.go b/test/utils/prometheus.go
index 926385d1..0294ffbc 100644
--- a/test/utils/prometheus.go
+++ b/test/utils/prometheus.go
@@ -127,10 +127,10 @@ func (p *PromScraper) Scrape() error {
 	return nil
 }
 
-func (p *PromScraper) HasMetric(name string) {
+func (p *PromScraper) HasMetric(_ string) {
 }
 
-func (p *PromScraper) MetricEquals(name string) {
+func (p *PromScraper) MetricEquals(_ string) {
 }
 
 // FindExact searches metric by name and labels
@@ -199,11 +199,11 @@ func (matcher *HaveMetricMatcher) Match(actual interface{}) (success bool, err e
 	return !promScraper.FindExact(matcher.pmv).IsEmpty(), nil
 }
 
-func (matcher *HaveMetricMatcher) FailureMessage(actual interface{}) (message string) {
+func (matcher *HaveMetricMatcher) FailureMessage(_ interface{}) (message string) {
 	return "Expected ShellOperator has metric"
 }
 
-func (matcher *HaveMetricMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+func (matcher *HaveMetricMatcher) NegatedFailureMessage(_ interface{}) (message string) {
 	return "Expected ShellOperator has no metric"
 }
 
diff --git a/test/utils/shell-operator.go b/test/utils/shell-operator.go
index 3b9daa18..cf1690bc 100644
--- a/test/utils/shell-operator.go
+++ b/test/utils/shell-operator.go
@@ -109,10 +109,10 @@ func (matcher *BeShellOperatorStoppedMatcher) Match(actual interface{}) (success
 	return matcher.err != nil && strings.Contains(matcher.err.Error(), "command is stopped"), nil
 }
 
-func (matcher *BeShellOperatorStoppedMatcher) FailureMessage(actual interface{}) (message string) {
+func (matcher *BeShellOperatorStoppedMatcher) FailureMessage(_ interface{}) (message string) {
 	return fmt.Sprintf("Expected ShellOperator stopped. Got error: %v", matcher.err)
 }
 
-func (matcher *BeShellOperatorStoppedMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+func (matcher *BeShellOperatorStoppedMatcher) NegatedFailureMessage(_ interface{}) (message string) {
 	return "Expected ShellOperator stopped with error"
 }
diff --git a/test/utils/streamedexec.go b/test/utils/streamedexec.go
index 856086d4..1dcb7f0c 100644
--- a/test/utils/streamedexec.go
+++ b/test/utils/streamedexec.go
@@ -102,7 +102,7 @@ func StreamedExecCommand(cmd *exec.Cmd, opts CommandOptions) error {
 	return nil
 }
 
-func consumeLines(r io.Reader, session *gexec.Session, opts CommandOptions) {
+func consumeLines(r io.Reader, _ *gexec.Session, opts CommandOptions) {
 	scanner := bufio.NewScanner(r)
 	for scanner.Scan() {
 		opts.OutputLineHandler(scanner.Text())