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error[E0072]: recursive types `Foo` and `Bar` have infinite size
--> $DIR/variance-regions-unused-indirect.rs:3:1
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LL | enum Foo<'a> {
| ^^^^^^^^^^^^
LL |
LL | Foo1(Bar<'a>)
| ------- recursive without indirection
...
LL | enum Bar<'a> {
| ^^^^^^^^^^^^
LL | Bar1(Foo<'a>)
| ------- recursive without indirection
|
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
|
LL ~ Foo1(Box<Bar<'a>>)
LL | }
LL |
LL | enum Bar<'a> {
LL ~ Bar1(Box<Foo<'a>>)
|
error[E0392]: lifetime parameter `'a` is never used
--> $DIR/variance-regions-unused-indirect.rs:3:10
|
LL | enum Foo<'a> {
| ^^ unused lifetime parameter
|
= help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
error[E0392]: lifetime parameter `'a` is never used
--> $DIR/variance-regions-unused-indirect.rs:8:10
|
LL | enum Bar<'a> {
| ^^ unused lifetime parameter
|
= help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0072, E0392.
For more information about an error, try `rustc --explain E0072`.
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