[Pharo-dev] [regression reporter]regression occurred

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https://ci.inria.fr/pharo/job/Pharo-3.0-Update-Step-2.1-Validation/label=mac/569/

3 regressions found.
  KernelTests.Classes.ClassHierarchyTest.testSubclasses
  Spec.Tests.SpecInterpreterTest.testBuildWidgetForWithSpec
  Spec.Tests.SpecInterpreterTest.testInterpretASpecModelMorphAssociation