cargo expand -p foo bar

mod bar {
    use crate::COUNTER;
    use std::sync::atomic::{Ordering, Ordering::SeqCst};
    use ctor::ctor;
    extern fn init() {
        COUNTER.store(COUNTER.load(SeqCst) + 1, Ordering::SeqCst)
    }
    #[used(linker)]
    #[allow(non_upper_case_globals)]
    #[doc(hidden)]
    #[link_section = "__DATA,__mod_init_func"]
    static init___rust_ctor___ctor: unsafe extern "C" fn() = {
        unsafe extern "C" fn init___rust_ctor___ctor() {
            init()
        }
        init___rust_ctor___ctor
    };
}

cargo +nightly run

The value of COUNTER is 2.
Why not 3?