http://build.webkit.org/results/SnowLeopard%20Intel%20Release%20(Tests)/r80391%20(26343)/results.html I am not sure when this first started. It should probably be added to the skipped list.
Added to the SL Skipped list in http://trac.webkit.org/changeset/80401
<rdar://problem/9091228>
The SL Test bots were green at r80427: http://build.webkit.org/builders/SnowLeopard%20Intel%20Release%20%28Tests%29/builds/26369 Removing the "MakingBotsRed" keyword.
This test is still in 'Skip' list with FIXME to remove from list: https://searchfox.org/wubkat/source/LayoutTests/TestExpectations#5342 Plus last pass of this test was in 2020: https://results.webkit.org/?suite=layout-tests&test=compositing%2Fgeometry%2Fempty-embed-rects.html