5 impl FnOnce<(u32, u32)> for Test {
6 //~^ ERROR the precise format of `Fn`-family traits' type parameters is subject to change
7 //~| ERROR manual implementations of `FnOnce` are experimental
10 extern "rust-call" fn call_once(self, (a, b): (u32, u32)) -> u32 {
13 //~^^^ ERROR rust-call ABI is subject to change
17 assert_eq!(Test(1u32, 2u32), 3u32);