Add thread safety example

6 jobs for master in 1 minute and 37 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Dist
passed #691055
dist

00:00:26

 
  Test
passed #691057
doc

00:00:48

passed #691056
lint

00:00:19

 
  Deploy
passed #691059
pages

00:00:22

failed pages:deploy

00:00:00

passed #691058
sccb

00:00:16