github: What to do when unittests fail?

[Andrej Mitrovic]

I've cloned Phobos just a few minutes ago, and I've tried to build it with unittests, I'm getting these:

Warning: AutoImplement!(C_6) ignored variadic arguments to the constructor C_6(...)
 --- std.socket(316) broken test ---
 --- std.regex(3671) broken test ---

So what's the procedure now? Do I have to first revert to some earlier version of Phobos that has unittests that pass, before doing any edits? I want to edit an unrelated module and change some code (actually change a unittest), and make a pull request. This is for an already reported bug in bugzilla.