{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
    let rust_fn_sig = ty::Binder::dummy(cx.tcx.mk_fn_sig(
    // `unsafe fn(unsafe fn(*mut i8) -> (), *mut i8, unsafe fn(*mut i8, *mut i8) -> ()) -> i32`
        [try_fn_ty, i8p, catch_fn_ty],