Wait infinitely for statistic computation so it does not time out

* fixes #71

CHANGELOG.md

@@ -3,6 +3,9 @@
 ## Features (User Facing)
 * Providing an unrecognized configuration option (say `runNtime` instead of `runtime`) will now raise an exception
 
+## Bugfixes (User Facing)
+* In 0.7.0 statistics generation might time out, this is fixed by waiting infinitely - thanks @devonestes for the [report](https://github.com/PragTob/benchee/issues/71).
+
 ## Breaking Changes (User Facing)
 * Dropped support for elixir 1.2, new support is elixir 1.3+
 * `Benchee.Config` was renamed to `Benchee.Configuration` (important when you use the more verbose API or used it in a Plugin)

lib/benchee/utility/map_value.ex

@@ -42,7 +42,7 @@ defmodule Benchee.Utility.MapValues do
          {key, Task.async(fn -> do_map_values(child_map, function) end)}
        end)
     |> Enum.map(fn({key, task}) ->
-         {key, Task.await(task)}
+         {key, Task.await(task, :infinity)}
        end)
     |> Map.new
   end