Rust - abnormal behaviour - dangling reference

main.rs

#[derive(Debug)]
pub enum Superheroes {
	Superman(Superman),
	Batman(Batman)
}

#[derive(Debug)]
pub struct Superman {
	id: i32,
	name: String,
	origin: String
}

#[derive(Debug)]
pub struct Batman {
	id: i32,
	name: String,
}

fn main() {
	let mut a = Superman {
		id: 1,
		name: "Kal-El".to_string(),
		origin: "Krypton".to_string()
	};
	let mut s_man = Superheroes::Superman(a);

	let rf = match s_man {
		Superheroes::Superman(ref mut p) => p,
		_ => unimplemented!(),
	};

	rf.name = "Clark Kent".to_string();
	println!("Printing rf.name: {:#?}", rf.name);

	match s_man {
		Superheroes::Superman(mut p) => {
			// Updating p
			p.name = "Superman".to_string();
			println!("p.name: {:#?}", p.name);

			// Updating rf
			println!("rf.name: {:#?}", rf.name);
			rf.name = "Shaktimaan".to_string();
			println!("rf.name: {:#?}", rf.name);

			// Value of p
			println!("p.name: {:#?}", p.name);
		},
		_ => unimplemented!(),
	}

	println!("Printing rf here: {:#?}", rf);

	// Here s_man is not accessible, uncommenting following gives err
	// println!("Printing s_man here: {:#?}", s_man);

}

rust toolchain 1.34.0-x86_64-apple-darwin

cargo edition 2015

cargo edition 2018