https://github.com/abusalimov/pytest-travis-fold/issues/14

--- pytest-travis-fold-1.3.0/pytest_travis_fold.py.orig
+++ pytest-travis-fold-1.3.0/pytest_travis_fold.py
@@ -182,7 +182,7 @@
     )
 
 
-@pytest.mark.trylast  # to let 'terminalreporter' be registered first
+@pytest.hookimpl(trylast=True)  # to let 'terminalreporter' be registered first
 def pytest_configure(config):
     travis = TravisContext(config.option.travis_fold)
     if not travis.fold_enabled: