In http://crrev.com/2477133002/, w3c-test-autoroller added [ Failure ] lines instead of new baselines for testharness tests.

This was fixed by tkent in http://crrev.com/2483763002/.

Build: https://build.chromium.org/p/chromium.infra.cron/builders/w3c-test-autoroller/builds/7780

What I expected to happen, was that update-w3c-test-expectations was supposed to download baselines at: https://cs.chromium.org/chromium/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/update_w3c_test_expectations.py?sq=package:chromium&dr&l=335

Making the logging more verbose may make it easier to solve issues like this in the future.