No crash log from the bots :(
I have no idea about the page cache stuff :)
This test works if the environment variable XVFB_SCREEN_DEPTH=8 is set, but crashes otherwise. Is not the only test with a similar behaviour. I reported those tests on: https://bugs.webkit.org/show_bug.cgi?id=132126
I've been working on https://bugs.webkit.org/show_bug.cgi?id=135348 for a while. And just realized that, in x86 (32bits) the backtraces are exactly the same: https://bugs.webkit.org/show_bug.cgi?id=135348#c4
This patch[1] fixes this test. 1., https://bugs.webkit.org/attachment.cgi?id=236812
This is fixed with http://trac.webkit.org/changeset/172828 *** This bug has been marked as a duplicate of bug 135348 ***