I think this try run (which removes the failure annotations) will show these fuzzy-failures and let us know the range of fuzziness we need to cover all platforms: https://treeherder.mozilla.org/#/jobs?repo=try&revision=9ec7224ebb3e39351e49a900442f99804750238e
Bug 1563059 Comment 1 Edit History
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I think this try run (which removes the failure annotations) will show these fuzzy-failures and let us know the range of fuzziness we need in order to cover all platforms: https://treeherder.mozilla.org/#/jobs?repo=try&revision=9ec7224ebb3e39351e49a900442f99804750238e