Function ostd::panicking::panic_handler

#[export_name = "__aster_panic_handler"]
pub fn panic_handler(info: &PanicInfo<'_>) -> !

The panic handler must be defined in the binary crate or in the crate that the binary crate explicity declares by extern crate. We cannot let the base crate depend on OSTD due to prismatic dependencies. That’s why we export this symbol and state the panic handler in the binary crate.