ruby vs elixir

gistfile1.txt

$ cat b.rb
array = (1..5_000_000).map { rand }
$ time ruby b.rb

real	0m0.911s
user	0m0.822s
sys	0m0.088s

$ cat b.ex
array = Enum.map (1..5_000_000), fn(_) -> :random.uniform end

$ time elixir b.ex
b.ex:1: variable array is unused

real	0m2.990s
user	0m2.567s
sys	0m0.469s