5 fn h(x:i32) -> i32 {3*x}
6 let mut vfnfer:Vec<Box<dyn Any>> = vec![];
7 vfnfer.push(Box::new(h));
8 println!("{:?}",(vfnfer[0] as dyn Fn)(3));
9 //~^ ERROR the precise format of `Fn`-family traits'
10 //~| ERROR missing generics for trait `Fn`
11 //~| ERROR the value of the associated type `Output` (from trait `FnOnce`)