when $VERBOSE is enabled prints no warnings fails because of Source locally installed gems is ignoring message

[yahonda]

Steps to reproduce

1. Install Ruby 3.4.0dev
2. Run these commands

git clone https://github.com/rails/thor
cd thor
bundle install
bundle exec rspec ./spec/no_warnings_spec.rb:4

Expected behavior

It should pass.

Actual behavior

It fails as follows.

$ ruby -v
ruby 3.4.0dev (2024-10-26T13:20:34Z master 484ea00d2e) +PRISM [x86_64-linux]
$ bundle exec rspec ./spec/no_warnings_spec.rb:4
Source locally installed gems is ignoring #<Bundler::StubSpecification name=prism version=1.0.0 platform=ruby> because it is missing extensions
Source locally installed gems is ignoring #<Bundler::StubSpecification name=json version=2.7.2 platform=ruby> because it is missing extensions
Source locally installed gems is ignoring #<Bundler::StubSpecification name=google-protobuf version=4.27.0 platform=ruby> because it is missing extensions
Source locally installed gems is ignoring #<Bundler::StubSpecification name=cgi version=0.4.1 platform=ruby> because it is missing extensions
Run options: include {locations: {"./spec/no_warnings_spec.rb" => [4]}}
F

Failures:

  1) when $VERBOSE is enabled prints no warnings
     Failure/Error: expect(err).to be_empty
       expected `"Source locally installed gems is ignoring #<Bundler::StubSpecification name=prism version=1.0.0 plat...Bundler::StubSpecification name=cgi version=0.4.1 platform=ruby> because it is missing extensions\n".empty?` to be truthy, got false
     # ./spec/no_warnings_spec.rb:8:in 'block (2 levels) in <top (required)>'

Finished in 0.16809 seconds (files took 0.05484 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/no_warnings_spec.rb:4 # when $VERBOSE is enabled prints no warnings

$

[yahonda]

This spec fails because of the Source locally installed gems is ignoring message that is emitted by bundler.

thor/spec/no_warnings_spec.rb

Line 6 in 3178667

_, err, = Open3.capture3("ruby -I #{root}/lib #{root}/spec/fixtures/verbose.thor")

• Run the thor command of this spec with bundler, that emits Source locally installed gems is ignoring warnings.

$ bundle exec ruby -I ./lib/ ./spec/fixtures/verbose.thor
Source locally installed gems is ignoring #<Bundler::StubSpecification name=prism version=1.0.0 platform=ruby> because it is missing extensions
Source locally installed gems is ignoring #<Bundler::StubSpecification name=json version=2.7.2 platform=ruby> because it is missing extensions
Source locally installed gems is ignoring #<Bundler::StubSpecification name=google-protobuf version=4.27.0 platform=ruby> because it is missing extensions
Source locally installed gems is ignoring #<Bundler::StubSpecification name=cgi version=0.4.1 platform=ruby> because it is missing extensions
Commands:
  verbose.thor help [COMMAND]  # Describe available commands or one specific command

$

• Run this spec without bundler, that does not emit any warnings.

$ ruby -I ./lib/ ./spec/fixtures/verbose.thor
Commands:
  verbose.thor help [COMMAND]  # Describe available commands or one specific command

$