MDL-41090 introduced a new functionality which allows for embedding of files in response contents.
Unfortunately the test for this causes random behat failures.

The offending line is:

And I should see "It's the logo" in the "3" "table_row"

This fails because behat does not perform strict lookups, so when searching for the "3" "table_row", it returns any table row which contains the number three.

If, for example, you run the test at 03:00, or 13:00, then any row with the current time in it will match.

The check above only checks the first result. In this case it's the "Started on Friday, 19 January 2018, 5:13AM" row, hence the failure.

Whilst I would love to change this to be a strict match, that's easier said than done and would break a great many tests.