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// revisions: base nll
// ignore-compare-mode-nll
//[nll] compile-flags: -Z borrowck=mir
fn main() {
let bar: fn(&mut u32) = |_| {};
fn foo(x: Box<dyn Fn(&i32)>) {}
let bar = Box::new(|x: &i32| {}) as Box<dyn Fn(_)>;
foo(bar);
//~^ ERROR E0308
//[nll]~^^ ERROR mismatched types
}
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