Here's a sheriff-o-matic bug filed yesterday:   https://crbug.com/876824 

The original report doesn't have a link to any failures, just the builder, which only only lists the result of the most recent try jobs.  There's no way to even divine what test failed from the bug, let alone get the output of the test when it failed.

The person who filed the bug later chimed in with a link to a different failing test on a different platform (which I can't reproduce), so it would be nice to know what test failure resulted in filing the bug initially.