// (7,24): error CS0136: A local or parameter named 'x' cannot be declared in this scope because that name is used in an enclosing local scope to define a local or parameter
// (17,31): error CS4013: Instance of type 'RuntimeArgumentHandle' cannot be used inside an anonymous function, query expression, iterator block or async method
// (18,31): error CS4013: Instance of type 'RuntimeArgumentHandle' cannot be used inside an anonymous function, query expression, iterator block or async method
// (31,31): error CS4013: Instance of type 'RuntimeArgumentHandle' cannot be used inside an anonymous function, query expression, iterator block or async method
// (34,31): error CS4013: Instance of type 'RuntimeArgumentHandle' cannot be used inside an anonymous function, query expression, iterator block or async method