This commit addresses the CI failure against Ruby master branch.
https://buildkite.com/rails/rails/builds/102575#018c4147-8760-48ac-812c-4e63fbe242fa
This failure reproduces since this commit:
d411d8f5fe
* Steps to reproduce
Install `ruby 3.3.0dev`
```ruby
git clone https://github.com/rails/rails
cd rails/railties
rm ../Gemfile.lock
bundle
bin/test test/application/bin_setup_test.rb -n test_bin_setup_output
```
* Without this commit
```ruby
$ ruby -v
ruby 3.3.0dev (2023-12-16T21:45:33Z master d7d10f3ee8) [x86_64-linux]
$ rm ../Gemfile.lock ; bundle ; bin/test test/application/bin_setup_test.rb -n test_bin_setup_output
... snip ...
F
Failure:
ApplicationTests::BinSetupTest#test_bin_setup_output [/home/yahonda/src/github.com/rails/rails/railties/test/application/bin_setup_test.rb:51]:
--- expected
+++ actual
@@ -2,10 +2,12 @@
The Gemfile's dependencies are satisfied
== Preparing database ==
+/home/yahonda/.rbenv/versions/trunk/lib/ruby/gems/3.3.0+0/gems/zeitwerk-2.6.12/lib/zeitwerk/kernel.rb:38: warning: mutex_m was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add mutex_m to your Gemfile or gemspec.
Created database 'app_development'
Created database 'app_test'
== Removing old logs and tempfiles ==
+/home/yahonda/.rbenv/versions/trunk/lib/ruby/gems/3.3.0+0/gems/zeitwerk-2.6.12/lib/zeitwerk/kernel.rb:38: warning: mutex_m was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add mutex_m to your Gemfile or gemspec.
== Restarting application server ==
"
bin/test test/application/bin_setup_test.rb:30
Finished in 12.553516s, 0.0797 runs/s, 0.0797 assertions/s.
1 runs, 1 assertions, 1 failures, 0 errors, 0 skips
$
```
6341e2dbb8