Run 21.3.8 on Travis due to regression on 21.3.0 (#9088)
Run 21.3.8 on Travis due to regression on 21.3.0 (#9088)


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