So I posted a patch here:
https://www.drupal.org/node/2091511#comment-10612272
Initially it failed, with QA saying something like 'QA couldn't download https://www.drupal.org/files/issues/cache_form_expiry_to_variable-209151...' (I can't find that test result in QA).
I queued it for retesting and the test went green, but the testbot still marked the issue as Needs Work with a test failure.
Here is the job that failed: https://dispatcher.drupalci.org/job/default/42601/console
Comments
Comment #2
MixologicMarking this issue as outdated. Not sure what the issue at the time was, but it wasnt something ongoing, so likely related to something specific to that patch.