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error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements
--> $DIR/issue-20831-debruijn.rs:28:8
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
| ^^^^^^^^^
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note: first, the lifetime cannot outlive the anonymous lifetime defined here...
--> $DIR/issue-20831-debruijn.rs:28:58
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...but the lifetime must also be valid for the lifetime `'a` as defined here...
--> $DIR/issue-20831-debruijn.rs:26:6
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LL | impl<'a> Publisher<'a> for MyStruct<'a> {
| ^^
note: ...so that the types are compatible
--> $DIR/issue-20831-debruijn.rs:28:8
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
| ^^^^^^^^^
= note: expected `<MyStruct<'a> as Publisher<'_>>`
found `<MyStruct<'_> as Publisher<'_>>`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0495`.
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