Check for both error messages when testing race conditions
Check for both error messages when testing race conditions

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