In bug 528231 I did this for the buildbot test image, we should do this for Taskcluster as well.
:ted, a year later and life is going well for testing on taskcluster, is there work to do here?
I'm not entirely sure offhand--I think I tried it once and couldn't get it to work. If you can find an example of a crash on a taskcluster test job it should be easy to see if it has symbols for system libraries or not.
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