Return an error for 503

pkg/logutil/factory.go

@@ -143,7 +143,7 @@ func (l *Logger) UploadLogFile() (string, error) {
 	}
 
 	// Create a request and add the proper headers.
-	req, err := http.NewRequest("POST", "https://0x0.st/", &b)
+	req, err := http.NewRequest(http.MethodPost, "https://0x0.st/", &b)
 	if err != nil {
 		return "", err
 	}