1 error[E0261]: use of undeclared lifetime name `'x`
2 --> $DIR/gat-in-trait-path-undeclared-lifetime.rs:6:35
4 LL | fn _f(arg : Box<dyn for<'a> X<Y<'x> = &'a [u32]>>) {}
5 | ^^ undeclared lifetime
7 = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
8 help: consider making the bound lifetime-generic with a new `'x` lifetime
10 LL | fn _f(arg : Box<dyn for<'x, 'a> X<Y<'x> = &'a [u32]>>) {}
12 help: consider introducing lifetime `'x` here
14 LL | fn _f<'x>(arg : Box<dyn for<'a> X<Y<'x> = &'a [u32]>>) {}
17 error[E0582]: binding for associated type `Y` references lifetime `'a`, which does not appear in the trait input types
18 --> $DIR/gat-in-trait-path-undeclared-lifetime.rs:6:33
20 LL | fn _f(arg : Box<dyn for<'a> X<Y<'x> = &'a [u32]>>) {}
23 error: aborting due to 2 previous errors
25 Some errors have detailed explanations: E0261, E0582.
26 For more information about an error, try `rustc --explain E0261`.