If in a script "CompositeCamera" is Graphics.Blit(), it's causes crash to Unity Editor, when button "Play" is pressed

To reproduce:

1. Open Unity
2. Open attached project
3. Open "Rendering Setup" scene
4. Press Play

Expected result: After you press Play button, on Game window, you will see a Cube and a gray area
Actual result: After you press Play button, Unity Editor crashes

Deleting Graphics.Blit() in "CompositeCamera" sript, disables crash

Reproduced on Unity 5.6.0f3. 2017.1.0a6
Not Reproduced on Unity 5.5.3f1
Regression on Unity 5.6.0a2