r92254 made fast/frames/lots-of-objects.html and fast/frames/lots-of-iframes.html
timeout in debug mode (32 and 64 bit too) on Qt platform.
failing test is skipped by https://trac.webkit.org/changeset/92272 to make our debug bots green.
I tried to build webkit qt and got the error:
/usr/bin/ld: obj/debug/launcherwindow.o: in function LauncherWindow::zoomAnimationFinished():../../../Tools/QtTestBrowser/launcherwindow.cpp:666: error: undefined reference to 'QGraphicsWebView::setTiledBackingStoreFrozen(bool)'
and a few others. I haven't had a chance to figure out why.
They works now, so I unskipped them - http://trac.webkit.org/changeset/108357