exit status: 1 with stderr:
<stdin>:5:5: error: argument labels '(aa:, _:)' do not match any available overloads f(aa: 1, 2) ^~~~~~~~~~~ <stdin>:5:5: note: overloads for 'f' exist with these partially matching parameter lists: (aa: Int, bb: Int), (cc: Int, dd: Int) f(aa: 1, 2) ^