After 100123 many of inspector/timeline tests and inspector/user-metrics.html crash: http://build.webkit.sed.hu/results/x86-64%20Linux%20Qt%20Debug/r100126%20%2818836%29/results.html
You can easily reproduce crashes with: $ Tools/Scripts/old-run-webkit-tests inspector/timeline
I skipped crashing tests until fix to make buildbot happy: http://trac.webkit.org/changeset/100144
Committed r100256: <http://trac.webkit.org/changeset/100256>