Rescueing a flakey spec to debug

flakey_spec.rb

RSpec.describe MyClass do
  let(:my_value) { 1 }
  let(:other_value) { 2 }

  it 'does a thing' do
    expect(my_value).to eq(other_value) # failure condition, something flakey though

  rescue RSpec::Expectations::ExpectationNotMetError
    $ERROR_INFO.message << <<~MSG

      This spec is flakey in CI. Here is some debug information.

      If it fails again and you don't know why, please feel free to add more debug information.

        Sidekiq::Testing.inline?: #{Sidekiq::Testing.inline?}
        Sidekiq::Testing.fake?: #{Sidekiq::Testing.fake?}
        my_value: #{my_value}
        other_value: #{other_value}
    MSG
    raise
  end
end