Not Pulling from Post

//Custom Post Type
register_post_type('inf_main_feature', array(
	'labels' => array(
		'name'	 => 'Main Featured',
		'singular_name' => 'Main Featured',
		'add_new' => __( 'Add New' ),
		'add_new_item' => __( 'Add New Feature' ),
		'view_item' => 'View Feature',
		'edit_item' => 'Edit Story',
		'new_item' => __('New Featire'),
		'view_item' => __('View New Feature'),
		'search_items' => __('Search Features'),
		'not_found' =>  __('No entries found'),
		'not_found_in_trash' => __('No entries found in Trash'),
	),
	'public' => true,
	'exclude_from_search' => true,
	'show_ui' => true,
	'capability_type' => 'post',
	'hierarchical' => false,
	'_edit_link' =>  'post.php?post=%d',
	'rewrite' => array(
		"slug" => "homebox",
		"with_front" => false,
	),
	'query_var' => true,
	'supports' => array('title', 'editor', 'page-attributes', 'thumbnail'),
));

//Custom Fields

 Carbon_Container::factory('custom_fields', __('Feature Options', 'inf'))
	->show_on_post_type('inf_main_feature')
  ->add_fields(array(
		Carbon_Field::factory('text', 'feature_url', 'The Link'),
		Carbon_Field::factory('attachment', 'main_image', 'Main Image')
			->help_text('Image Dimensions - 600 × 600 pixels.')
	));

// Main Feature
function inf_feature() {
  $args = array (
    'post_type' => 'inf_main_feature',
     'posts_per_page' => 1
    );
  $feature = get_post($args)[0]->ID;
  $feature_link = get_post_meta($feature->ID, 'feature_url', true);
  $main_boxID =  get_post_meta($feature->ID, 'main_image', full);
  $main_image = get_post($main_boxID[0])->guid;
?>
  <div class="main_feature_container">
      <div class="main_feature">
      <a href="<?php echo $feature_link ?>">
        <img src="<?php echo $main_image ?>" />
      </a>
  </div>
<?php
}