#1258 (Aug 17, 2020, 12:50:10 AM)

1. upgrade phabricator: Promote 2020 Week 31 + subsequent change;
   upgrade arcanist: Promote 2020 Week 29; (detail / hgweb)
2. clarified management of services: static declarations vs. dynamic instances (e.g. relevant for stateful Session.Protocol_Handler, notably Scala.Handler and session "System"); (detail / hgweb)

Started by an SCM change

This run spent:

• 9.2 sec waiting;
• 1 hr 32 min build duration;
• 1 hr 32 min total from scheduled to completion.