Is it possible to obtain a value from another process?

I have this script written in rust that grabs the raw pointer of an initialized u8 value, prints the address of that pointer, then basically goes on pause waiting for a user input.

fn main() {
    //  Initialize `x` as raw pointer of `u8` value `43`
    let x = &mut (43 as u8) as *mut u8;

    println!("{:?}", x);

    //  Wait for user input so that `x` stays in place
    drop(std::io::stdin().read_line(&mut String::new()));
}

The script above runs, prints the address of where x is being stored, then goes to "sleep", leaving x at that specific memory location. I was wondering if it were possible to run another process and use that specific memory address to grab the value of x. I used the following script that I wrote:

unsafe fn read<T>(addr: i64) -> &'static T {
    &*(addr as *mut T)
}

fn main() {
    unsafe {
        println!("{}", read::<u8>(0xe1110ff9ef))
    }
}

But it would always result with this error: error: process didn't exit successfully: target\debug\t3.exe (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)

Is this possible?