anchor.diff:  
     @failingTest
     @override
  +  test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr1() {
  +    return super
  +        .test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr1();
  +  }
  +
  +  @failingTest
  +  @override
     test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr2() async {
       await super
           .test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr2();
  
positive.code:     expect(v.type.toString(), 'List<dynamic>');
    }
  
    @failingTest
    test_unsafeBlockClosureInference_functionCall_explicitDynamicParam_viaExpr1() async {
      // Note: (f<dynamic>) is not properly resulting in an instantiated
      // function type due to dartbug.com/25824.
  
negative.code:     expect(v.type.toString(), 'List<int>');
    }
  
    test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr1() async {
      // TODO(paulberry): for some reason (f<int>) is not properly resulting
      // in an instantiated function type.
  