anchor.diff:      });
   
       await d.appDir({'a': 'any', 'b': '>1.0.0'}).create();
  -    await expectResolves(
  -        error: 'Package b has no versions that match >1.0.0 derived from:\n'
  -            '- myapp depends on version >1.0.0');
  +    await expectResolves(error: equalsIgnoringWhitespace("""
  +      Because no versions of b match >1.0.0 and myapp depends on b >1.0.0,
  +        version solving failed.
  +    """));
     });
   
     // This is a regression test for #18300.
  
positive.code:     });
  
      await d.appDir({'foo': '1.0.0', 'bar': '1.0.0'}).create();
      await expectResolves(
          error: 'Incompatible version constraints on shared:\n'
              '- bar 1.0.0 depends on version >3.0.0\n'
              '- foo 1.0.0 depends on version <=2.0.0');
    });
  
    test('mismatched descriptions', () async {
  
negative.code:     });
  
      await d.appDir({'foo': '1.0.0'}).create();
      await expectResolves(error: equalsIgnoringWhitespace("""
        Because myapp depends on foo 1.0.0 which depends on myapp >0.0.0 from
          hosted, myapp >0.0.0 from hosted is required.
        So, because myapp is 0.0.0, version solving failed.
      """));
    });
  }
  
  