I'm having some analyze repo tools failures in files that I haven't touched in flutter/packages (both in stable and master?)

See: https://ci.chromium.org/ui/p/flutter/builders/try/Linux%20analyze%20stable/14294/overview

A couple of lints are failing:

• invalid_null_aware_operator
• unnecessary_non_null_assertion

@bparrishMines took a look and found the root cause:

It looks like the lint is caused by the pubspec_parse package. Their latest version made Pubspec.environment nonull: https://pub.dev/packages/pubspec_parse/changelog#140

Fix the tool.