Test dom/canvas/test/webgl-mochitest/test_webgl2_invalidate_framebuffer.html fails on Windows XP with the current level 1 content sandbox. Looks like it might needs some extra policy rules as the following are logged: 07:39:44 INFO - [Child 3304] WARNING: 'Process Sandbox BLOCKED: NtCreateKey for : SYSTEM\CurrentControlSet\Services\EventLog\Application\NVIDIA OpenGL Driver 07:39:45 INFO - [Child 3304] WARNING: 'Process Sandbox BLOCKED: NtCreateKey for : NVIDIA OpenGL Driver
I realised that it would be pretty strange for the low integrity sandbox to be causing issues on WinXP, as it doesn't have integrity levels. So, it turns out that it seems to be the sandbox logging that is causing a problem for this particular test. Here's a try push with the sandbox level=1 and no logging: https://treeherder.mozilla.org/#/jobs?repo=try&revision=00fc920af805 This now gives the same results as just e10s on holly. That makes this less urgent to fix.
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