1 error[E0261]: use of undeclared lifetime name `'a`
2 --> $DIR/issue-67510.rs:7:21
4 LL | fn f(x: Box<dyn X<Y<'a>=&'a ()>>) {}
5 | - ^^ undeclared lifetime
7 | help: consider introducing lifetime `'a` here: `<'a>`
9 = help: if you want to experiment with in-band lifetime bindings, add `#![feature(in_band_lifetimes)]` to the crate attributes
11 error[E0261]: use of undeclared lifetime name `'a`
12 --> $DIR/issue-67510.rs:7:26
14 LL | fn f(x: Box<dyn X<Y<'a>=&'a ()>>) {}
15 | - ^^ undeclared lifetime
17 | help: consider introducing lifetime `'a` here: `<'a>`
19 = help: if you want to experiment with in-band lifetime bindings, add `#![feature(in_band_lifetimes)]` to the crate attributes
21 error: aborting due to 2 previous errors
23 For more information about this error, try `rustc --explain E0261`.