title: Getting "Tuple element name is inferred. Please use language version 7.1 or greater to access an element by its inferred name."
body: <p>We have the following code that has been working fine in our UWP app until today after we updated Visual Studio 2017 to the latest <strong>15.3</strong>.</p>
  
  <pre><code>private void Test()
  {
      var groups = new List&lt;(Guid key, IList&lt;(string, bool)&gt; items)&gt;();
  
      var items = new List&lt;(string, bool)&gt;
      {
          ("a", true),
          ("b", false),
          ("c", false)
      };
      var group = (Guid.NewGuid(), items);
  
      groups.Add(group);
  }
  </code></pre>
  
  <p>There is no error message but this in the output window</p>
  
  <blockquote>
    <p>Tuple element name 'items' is inferred. Please use language version
    7.1 or greater to access an element by its inferred name.</p>
  </blockquote>
  
  <p>Any idea why and how to fix this?</p>