Bug 968200 is an example where Firefox would show an alert and would time out waiting for somebody to click it. We should log a screenshot when a test times out. With that, debugging what's happening in that bug would take minutes rather than weeks.

I think for Android 4 this is not hard, I have an alias sitting around that does: adb shell /system/bin/screencap -p /sdcard/screenshot.png I'm not sure if that exists on 2.{2,3}.

blobber will help here too: pull screenshot.png to MOZ_UPLOAD_DIR and we are done!