os-rust/src/test/ui/nll/issue-52742.rs

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#![feature(nll)]
#![feature(in_band_lifetimes)]
struct Foo<'a, 'b> {
x: &'a u32,
y: &'b u32,
}
struct Bar<'b> {
z: &'b u32
}
impl Foo<'_, '_> {
fn take_bar(&mut self, b: Bar<'_>) {
self.y = b.z
//~^ ERROR unsatisfied lifetime constraints
}
}
fn main() { }