new_contents: import spacy
  import spacy.matcher
  
  import pytest
  
  @pytest.mark.models
  def test_matcher_segfault():
      nlp = spacy.load('en', parser=False, entity=False)
      matcher = spacy.matcher.Matcher(nlp.vocab)
      content = u'''a b; c'''
      matcher.add(entity_key='1', label='TEST', attrs={}, specs=[[{65: 'a'}, {65: 'b'}]])
      matcher(nlp(content))
      matcher.add(entity_key='2', label='TEST', attrs={}, specs=[[{65: 'a'}, {65: 'b'}, {5: True}, {65: 'c'}]])
      matcher(nlp(content))
      matcher.add(entity_key='3', label='TEST', attrs={}, specs=[[{65: 'a'}, {65: 'b'}, {5: True}, {65: 'd'}]])
      matcher(nlp(content))
  
subject: Test Issue #587: Matcher segfaults on particular input