**Do you want to request a *feature* or report a *bug*?**

Feature

**What is the current behavior?**

While server rendering React DOM and then hydrating with a different structure, React rightly warns that there are inconsistencies. But when I first saw these warnings I was not sure exactly what was going wrong.

Here are a few of the warnings I have been receiving:

```
Warning: Did not find a matching <button> in <div>.

Warning: Did not find a matching <img> in <div>.

Warning: Did not expect server HTML to contain a <div> in <div>.
```

Only on that last error did I catch on that this was a problem with server-rendering and the inconsistencies between that and my client render (intentional at the moment while testing some things in unpure render functions).

**What is the expected behavior?**

Being more explicit that this was a rendering inconsistency between server and client.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

React v16-beta.1
inputValueTracking.track((domElement: any));
        ReactDOMFiberTextarea.postMountWrapper(domElement, rawProps);
        break;
      case 'select':
      case 'option':
        
        
        
        
        
        break;
      default:
        if (typeof rawProps.onClick === 'function') {
          
          trapClickOnNonInteractiveElement(((domElement: any): HTMLElement));
        }
        break;
    }
    return updatePayload;
  },
  diffHydratedText(textNode: Text, text: string): boolean {
    const isDifferent = textNode.nodeValue !== text;
    if (__DEV__) {
      if (isDifferent) {
        warnForTextDifference(textNode.nodeValue, text);
      }
    }
    return isDifferent;
  },