I assume the results aren't being uploaded. This makes it much harder to see that this failure is a flake and to get attention to it.
These started appearing in test-results on 2017-12-15 according to BQ: https://bigquery.cloud.google.com/results/test-results-hrd:bquijob_52b7078b_16191de5919
Comment 1 by seanmccullough@chromium.org
, Feb 14 2018