debug: what's going on with this test?

Author: nedbat

tests/test_api.py

@@ -623,6 +623,8 @@ def test_warn_once(self) -> None:
             cov._warn("Warning, warning 1!", slug="bot", once=True)
             cov._warn("Warning, warning 2!", slug="bot", once=True)
 
+        texts = [cast(Warning, w.message).args[0] for w in warns]
+        print(texts)
         assert_coverage_warnings(warns, "Warning, warning 1! (bot)")
         # No "Warning, warning 2!" in warns
         assert len(warns) == 1