RSpec Segfault

gistfile1.txt

class MyThing
end

RSpec.shared_examples 'a thing that causes a segfault' do
  it 'segfaults' do
    expect(true).to eq(true)
  end
end

RSpec.describe MyThing do
  def app
    MyThing
  end
  it_behaves_like 'a thing that causes a segfault' do
    let(:app) { app }
  end
end