c.f. https://github.com/badges/shields/pull/4145#issuecomment-538768061 This is super-strange. I am curious what this is about! (Though not quite curious enough to go digging.) The test failure is reproducible in Node 12.11.0 though not e.g. 10.6.3. Example failure on master: https://circleci.com/gh/badges/shields/74325