27 lines
1.0 KiB
Plaintext
27 lines
1.0 KiB
Plaintext
error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements
|
|
--> $DIR/regions-creating-enums4.rs:17:5
|
|
|
|
|
LL | ast::add(x, y) //~ ERROR cannot infer
|
|
| ^^^^^^^^
|
|
|
|
|
note: first, the lifetime cannot outlive the lifetime 'a as defined on the function body at 16:16...
|
|
--> $DIR/regions-creating-enums4.rs:16:16
|
|
|
|
|
LL | fn mk_add_bad2<'a,'b>(x: &'a ast<'a>, y: &'a ast<'a>, z: &ast) -> ast<'b> {
|
|
| ^^
|
|
= note: ...so that the expression is assignable:
|
|
expected &ast<'_>
|
|
found &ast<'a>
|
|
note: but, the lifetime must be valid for the lifetime 'b as defined on the function body at 16:19...
|
|
--> $DIR/regions-creating-enums4.rs:16:19
|
|
|
|
|
LL | fn mk_add_bad2<'a,'b>(x: &'a ast<'a>, y: &'a ast<'a>, z: &ast) -> ast<'b> {
|
|
| ^^
|
|
= note: ...so that the expression is assignable:
|
|
expected ast<'b>
|
|
found ast<'_>
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0495`.
|