Nightly CI build for the Rails repo

Daily build with Ruby head

Failed in 18m 20s
:pipeline: rails-nightly-initial-pipeline

✍️ rails/docs-preview:

activerecord mysql2 (master-debug)rake db:mysql:rebuild mysql2:test
Waited 31s
·
Ran in 8m 29s
Total Job Run Time: 9h 10m