Improve `capture_io/3` on exit test
Improve `capture_io/3` on exit test

beedub/elixir,kelvinst/elixir,gfvcastro/elixir,kimshrier/elixir,pedrosnk/elixir,antipax/elixir,ggcampinho/elixir,antipax/elixir,michalmuskala/elixir,beedub/elixir,ggcampinho/elixir,gfvcastro/elixir,joshprice/elixir,pedrosnk/elixir,kimshrier/elixir,elixir-lang/elixir,lexmag/elixir,lexmag/elixir,kelvinst/elixir