Nightly CI build for the Rails repo

Daily build with Ruby head

Failed in 23m 49s
:pipeline: rails-nightly-initial-pipeline
:docker: rubylang/ruby:master
Waited 5s
·
Ran in 1m 56s
guides (master-debug)rake test
Waited 1s
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Ran in 7m 0s
Total Job Run Time: 2h 54m