**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.
OffscreenPriority,
} = require('ReactPriorityLevel');
var {AsyncUpdates} = require('ReactTypeOfInternalContext');
var {
  PerformedWork,
  Placement,
  Update,
  PlacementAndUpdate,
  Deletion,
  ContentReset,
  Callback,
  Err,
  Ref,
} = require('ReactTypeOfSideEffect');
var {
  HostRoot,
  HostComponent,
  HostPortal,
  ClassComponent,
} = require('ReactTypeOfWork');
var {getUpdatePriority} = require('ReactFiberUpdateQueue');
var {resetContext} = require('ReactFiberContext');
var invariant = require('fbjs/lib/invariant');
if (__DEV__) {
  var warning = require('fbjs/lib/warning');
  var ReactFiberInstrumentation = require('ReactFiberInstrumentation');
  var ReactDebugCurrentFiber = require('ReactDebugCurrentFiber');
  var {
    recordEffect,
    recordScheduleUpdate,