1 error: lifetime may not live long enough
2 --> $DIR/issue-95272.rs:10:13
4 LL | fn test<'a, 'b>(x: Cell<&'a ()>, y: Cell<&'b ()>) {
5 | -- -- lifetime `'b` defined here
7 | lifetime `'a` defined here
9 | ^^^^^ assignment requires that `'a` must outlive `'b`
11 = help: consider adding the following bound: `'a: 'b`
12 = note: requirement occurs because of a function pointer to `check`
13 = note: the function `check` is invariant over the parameter `'a`
14 = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
16 error: aborting due to previous error