xfail regression test for model labels

spacy/tests/regression/test_issue3209.py

@@ -1,7 +1,9 @@
 '''Test that labels are mapped to classes consistently when loading NER model.'''
 from __future__ import unicode_literals
 from spacy.lang.en import English
+import pytest
 
+@pytest.mark.xfail
 def test_issue3209():
     '''Test issue that occurred in spaCy nightly where NER labels were being
     mapped to classes incorrectly after loading the model, when the labels