The defendant may demur to the indictment or information when it appears upon its face either—
(1) That it does not substantially conform to the requirements of this code;
(2) [That] more than one crime is charged;
(3) That the facts charged do not constitute a crime;
(4) That the indictment or information contains any matter which, if true, would constitute a defense or other legal bar to the action.
[ 1891 c 28 § 55; Code 1881 § 1051; RRS § 2105.]