[ews] Notify bot watchers about build failure on clean tree run on EWS bots. This should happen only when the build is broken. This might result in lot of emails when build is broken, but probably that's ok, since broken build requires immediate attention.
Created attachment 405144 [details]
Committed r264830: <https://trac.webkit.org/changeset/264830>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 405144 [details].