Upgrading from 3.2.0 to 3.2.1: Wrong Number of Arguments

Simple spec passes in 3.2.0:

it "destroys an album" do   3.times { Factory(:album, photo_library: @photo_library) }   visit photo_library_path(@photo_library)   find("h3").click_link 'Delete'   find("#notice").should have_content("Album deleted successfully")   Album.count.should eq 2 end

But fails in 3.2.1 with:

1) Albums destroys an album      Failure/Error: login_admin      ArgumentError:        wrong number of arguments (0 for 1)      # ./app/controllers/sessions_controller.rb:8:in `create'      # (eval):2:in `click_button'      # ./spec/requests/albums_spec.rb:7:in `block (2 levels) in <top (required)>'

Line 8 in sessions_controller is:

user = User.find_by_email(params[:email])

What's going on here? Here's the diff in the Gemfile.lock after making the upgrade:

- actionmailer (3.2.0) - actionpack (= 3.2.0) + actionmailer (3.2.1) + actionpack (= 3.2.1) - actionpack (3.2.0) - activemodel (= 3.2.0) - activesupport (= 3.2.0) + actionpack (3.2.1) + activemodel (= 3.2.1) + activesupport (= 3.2.1) - journey (~> 1.0.0) + journey (~> 1.0.1) - activemodel (3.2.0) - activesupport (= 3.2.0) + activemodel (3.2.1) + activesupport (= 3.2.1) - activerecord (3.2.0) - activemodel (= 3.2.0) - activesupport (= 3.2.0) + activerecord (3.2.1) + activemodel (= 3.2.1) + activesupport (= 3.2.1) - activeresource (3.2.0) - activemodel (= 3.2.0) - activesupport (= 3.2.0) - activesupport (3.2.0) + activeresource (3.2.1) + activemodel (= 3.2.1) + activesupport (= 3.2.1) + activesupport (3.2.1)

- rails (3.2.0) - actionmailer (= 3.2.0) - actionpack (= 3.2.0) - activerecord (= 3.2.0) - activeresource (= 3.2.0) - activesupport (= 3.2.0) + rails (3.2.1) + actionmailer (= 3.2.1) + actionpack (= 3.2.1) + activerecord (= 3.2.1) + activeresource (= 3.2.1) + activesupport (= 3.2.1) - railties (= 3.2.0) - railties (3.2.0) - actionpack (= 3.2.0) - activesupport (= 3.2.0) + railties (= 3.2.1) + railties (3.2.1) + actionpack (= 3.2.1) + activesupport (= 3.2.1) - rails (= 3.2.0) + rails (= 3.2.1)