Nightly CI build for the Rails repo

Daily build with Ruby head

Failed in 24m 47s
:pipeline: rails-nightly-initial-pipeline
activerecord mysql2 (master) [prepared_statements]rake db:mysql:rebuild mysql2:test
Waited 4s
·
Ran in 5m 12s
activerecord mysql2 (master-debug)rake db:mysql:rebuild mysql2:test
Waited 39s
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Ran in 8m 16s
Total Job Run Time: 10h 26m