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This pull request adds CI against Ruby master branch:
It runs on a daily schedule, so it should not require pull requests to pass this test
head - Ruby master branch
debug -
headwith assertions enabled-DRUBY_DEBUG=1YJIT enabled
Refer ci: Refactor CI workflow with build matrix railsdoc/railsdoc.github.io#173
Add
RUBYOPT: "-W2 --debug-frozen-string-literal"to show warningshttps://docs.ruby-lang.org/en/master/ruby/options_md.html#label-W-3A+Set+Warning+Policy
Show where mutated chilled strings were allocated ruby/ruby#11893
Use Oracle Instant client permanent links
https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html