5.0-12891 vs. 5.0-12889 / ogl-lin-mesa / lesson08

5.0-12891 (87e4a078) Diff 5.0-12889 (c42b80a1)
Failure 7bb6ab6f15bcdff203bce99e737b1671f6d12a85
Failure 7318646132d43188340cbde505fec1b9d2ceae75
Failure 7318646132d43188340cbde505fec1b9d2ceae75
Failure ac8bbd4cabed42b0e9c8aeaa4211817116b6b81d