How to do nested includes in angular work?

I can't get nested includes to work.

There are two directives, both of which declare that they will contain their content. When I nest them, there is nothing inside.

Below is this fiddle that demonstrates my problem.

Here is the code:

function Ctrl($scope) {
  $scope.text = 'Neque porro quisquam est qui dolorem ipsum quia dolor...';
}

angular.module('transclude', [])
 .directive('outer', function(){
    return {
      restrict: 'E',
      replace: true,
      transclude: true,
      scope: {},
      template: '<div style="border: 1px solid black;">' +
                '<div>Outer</div>' +
                '<inner ng-transclude></inner>' +
                '</div>'
    };
 }).directive('inner', function(){
     return {
         restrict: 'E',
         transclude: true,
         replace: true,
         template :'<div style="border: 1px solid red;">' +
                   '<div>Inner</div>' +
                   '<div ng-transclude></div>' +
                   '</div>'
     };
 });