Now that build.webkit.org has upgraded to latest buildbot, webkitpy auto-installer shouldn't install ancient version of buildbot (0.8.6) anymore.
Created attachment 421668 [details] Patch
Created attachment 421669 [details] Patch
Committed r273572: <https://commits.webkit.org/r273572> All reviewed patches have been landed. Closing bug and clearing flags on attachment 421669 [details].
<rdar://problem/74800220>