Capybara save_and_open_page after AJAX, before failed expectation

snippet.rb

def original
  click_link "Load something" # Runs AJAX
  expect(page).to have_content('Something')
end

def bad
  click_link "Load something" # Runs AJAX
  save_and_open_page # to see why it isn't loading
  expect(page).to have_content('Something')
end

def good
  click_link "Load something" # Runs AJAX
  begin
    expect(page).to have_content('Something')
  rescue Exception
    save_and_open_page # to see whether it is loading anything at all
    raise
  end
end