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fn thing(x: impl FnOnce(&u32, &u32, u32)) {}
fn main() {
let f = | _ , y: &u32 , z | ();
thing(f);
//~^ ERROR implementation of `FnOnce` is not general enough
//~| ERROR implementation of `FnOnce` is not general enough
let f = | x, y: _ , z: u32 | ();
thing(f);
//~^ ERROR implementation of `FnOnce` is not general enough
//~| ERROR implementation of `FnOnce` is not general enough
//~| ERROR implementation of `FnOnce` is not general enough
//~| ERROR implementation of `FnOnce` is not general enough
}
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