"extract into function" inserts dereference for macro call

I'm not knowledgeable enough to explain what's going on here, but here's an example which reproduces this:

let v = vec![1];
for _ in 0..1 {
    println!("len is {}", v.len());
}

highlight the println! statement, Extract into function...

fn fun_name(v: &Vec<i32>) {
    *println!("len is {}", v.len());
}

note the dereference, which prevents this from compiling (type () cannot be dereferenced)

rust-analyzer version: 0.3.1524-standalone (7ac161ce7 2023-05-21)

rustc version: (eg. output of rustc -V) 1.69.0

Reproduce the issue in rust-analyzer using the Rust snippet and the Extract into function action, then trace how extraction handles the println! macro call. Done means the generated function no longer inserts a dereference and the resulting Rust code compiles.