Preheat the oven to 350°. In a food processor, combine the graham cracker crumbs with the sugar, cinnamon, salt and melted butter and pulse until the crumbs are moistened. Press the crumbs evenly into a 9- to 10-inch, deep-dish glass or ceramic pie plate. Bake for about 8 minutes, until the crust is lightly browned and set. Let cool completely.