Pr09 batch 3
part of #28602 
@jbrockmendel is there a guide somewhere that specifies what each label is used for? Thanks! i dont understand the question.  what labels? can you merge master & ping on green. > @jbrockmendel is there a guide somewhere that specifies what each label is used for? Thanks!

no guide on the labels, they are *hopefully* self-explanatory :-> they are just to organize the issues & PRs like the Docs label is self explanatory but I'm not sure what Clean is for. 

Is the failing test (probably) due to a missing commit from master?  @jreback  all set. thanks @HughKelley 

master was failing because of a numpy change; we disabled that build for now.

clean is just a generic label for internal cleaning.