blob: 0e0086be9ea8d588e72d9593cb85cc3d4f06171f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
error: lifetime may not live long enough
--> $DIR/regions-bounded-method-type-parameters-trait-bound.rs:20:5
|
LL | fn caller2<'a,'b,F:Foo<'a>>(a: Inv<'a>, b: Inv<'b>, f: F) {
| -- -- lifetime `'b` defined here
| |
| lifetime `'a` defined here
LL | // Here the value provided for 'y is 'b, and hence 'b:'a does not hold.
LL | f.method(b);
| ^^^^^^^^^^^ argument requires that `'b` must outlive `'a`
|
= help: consider adding the following bound: `'b: 'a`
= note: requirement occurs because of the type `Inv<'_>`, which makes the generic argument `'_` invariant
= note: the struct `Inv<'a>` is invariant over the parameter `'a`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
error: aborting due to previous error
|
