Silence some lint warnings

node/metrics.go

@@ -73,6 +73,7 @@ func (p *metricsProxy) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.Header().Set("Content-Type", "application/json")
+	// nolint: errcheck
 	json.NewEncoder(w).Encode(map[string]interface{}{
 		"data":   data,
 		"labels": labels,

node/server_test.go

@@ -26,7 +26,7 @@ var testAudio = []byte("trust me, I'm an mp3!")
 
 func fakeAudioServer() (*httptest.Server, int) {
 	s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
-		w.Write(testAudio)
+		w.Write(testAudio) // nolint: errcheck
 	}))
 	// Extract the port from the URL.
 	port := 80
@@ -163,9 +163,9 @@ func TestServer(t *testing.T) {
 	cancel()
 
 	for _, s := range servers {
-		s.Wait()
+		s.Wait() // nolint: errcheck
 	}
 	for _, n := range nodes {
-		n.Wait()
+		n.Wait() // nolint: errcheck
 	}
 }