see if test_missing is the only culprit

Author: valeriupredoi

setup.cfg

@@ -3,6 +3,7 @@ addopts =
 #    --doctest-modules
     --ignore=old_code/
     --ignore=tests/s3_exploratory
+    --ignore=tests/test_missing.py
     --cov=activestorage
     --cov-report=xml:test-reports/coverage.xml
     --cov-report=html:test-reports/coverage_html