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error[E0521]: borrowed data escapes outside of closure
--> tests/ui/no_uaf_1.rs:23:13
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21 | let rc_clone = rc.clone();
| -------- `rc_clone` declared here, outside of the closure body
22 | let x = Holder::<'_, FooOpaque>::new_with(move |builder| {
| ------- `builder` is a reference that is only valid in the closure body
23 | / builder.build(Foo {
24 | | x: "Hello".to_owned(),
25 | | y: rc_clone,
26 | | });
| |______________^ `builder` escapes the closure body here
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= note: requirement occurs because of a mutable reference to `selfref::Builder<'_, FooOpaque>`
= note: mutable references are invariant over their type parameter
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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