The following tests fail intermittently on g965:
Probe color at (0,0)
Expected: 0 255 0 0
Observed: 128 128 128 128
Anecdotally, Jason Ekstrand felt like they started failing when blorp was enabled for gen4.
Tests are disabled in Intel's Mesa CI.
Also intermittent: piglit.spec.nv_conditional_render.vertex_array
also intermittent and disabled: