error: unsatisfied lifetime constraints --> $DIR/issue-52213.rs:13:20 | LL | fn transmute_lifetime<'a, 'b, T>(t: &'a (T,)) -> &'b T { | -- -- lifetime `'b` defined here | | | lifetime `'a` defined here LL | match (&t,) { //~ ERROR cannot infer an appropriate lifetime LL | ((u,),) => u, | ^ returning this value requires that `'a` must outlive `'b` error: aborting due to previous error