Layout test editing/pasteboard/drop-text-events.html is flaky on GTK+. It crashes or fails sometimes. When it crashes the output is the following: (WebKitTestRunner:7881): Gdk-WARNING **: WebKitTestRunner: Fatal IO error 11 (Resource temporarily unavailable) on X server :3. When it fails the diff is the following: https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r183041%20%287837%29/editing/pasteboard/drop-text-events-pretty-diff.html