#1385 (Jan 21, 2021, 12:50:10 AM)

1. more informative error;
   tuned; (detail / hgweb)
2. added lemmas (detail / hgweb)

Started by an SCM change

This run spent:

• 9.6 sec waiting;
• 1 hr 30 min build duration;
• 1 hr 30 min total from scheduled to completion.