See https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20tool_tests_general/9313/overview

It looks like this is happening because the failing test references getFlutterRoot(), which can change value depending on the order that tests run in:

https://github.com/flutter/flutter/blob/master/packages/flutter_tools/test/general.shard/asset_bundle_test.dart#L553

@mdebbar @jonahwilliams @eyebrowsoffire