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

**What is the current behavior?**
Page load throws console error: `Warning: Stateless function components cannot be given refs. Attempts to access this ref will fail.null`

```
// Chrome console
6VM598:27 Warning: Stateless function components cannot be given refs. Attempts to access this ref will fail.null
window.console.error @ VM598:27
printWarning @ warning.js:36
warning @ warning.js:60
mountIndeterminateComponent @ react-dom.development.js:10488
beginWork @ react-dom.development.js:10647
performUnitOfWork @ react-dom.development.js:12621
workLoop @ react-dom.development.js:12730
callCallback @ react-dom.development.js:1319
invokeGuardedCallbackDev @ react-dom.development.js:1358
invokeGuardedCallback @ react-dom.development.js:1215
performWork @ react-dom.development.js:12848
batchedUpdates @ react-dom.development.js:13292
performFiberBatchedUpdates @ react-dom.development.js:1666
stackBatchedUpdates @ react-dom.development.js:1657
batchedUpdates @ react-dom.development.js:1671
batchedUpdatesWithControlledComponents @ react-dom.development.js:1684
dispatchEvent @ react-dom.development.js:1894
```

**What is the expected behavior?**
No console error. Or at least some way to trace which is the stateless component that is causing the issue.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**
`"react": "^16.0.0-rc.3",`
`Chrome Version 60.0.3112.113 (Official Build) (64-bit)`
`macOS Sierra 10.12.6`


- This error only started to appear after upgrading from React 15 -> 16.
(fiber.alternate !== null && capturedErrors.has(fiber.alternate)))
    );
  }
  function isFailedBoundary(fiber: Fiber): boolean {
     
     
    return (
      failedBoundaries !== null &&
      (failedBoundaries.has(fiber) ||
        (fiber.alternate !== null && failedBoundaries.has(fiber.alternate)))
    );
  }
  function commitErrorHandling(effectfulFiber: Fiber) {
    let capturedError;
    if (capturedErrors !== null) {
      capturedError = capturedErrors.get(effectfulFiber);
      capturedErrors.delete(effectfulFiber);
      if (capturedError == null) {
        if (effectfulFiber.alternate !== null) {
          effectfulFiber = effectfulFiber.alternate;
          capturedError = capturedErrors.get(effectfulFiber);
          capturedErrors.delete(effectfulFiber);
        }
      }
    }
    invariant(
      capturedError != null,
      'No error for given unit of work. This error is likely caused by a ' +
        'bug in React. Please file an issue.',
    );