mirror of https://github.com/rust-lang/rust
52 lines
2.4 KiB
Plaintext
52 lines
2.4 KiB
Plaintext
error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements
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--> $DIR/issue-20831-debruijn.rs:28:33
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: first, the lifetime cannot outlive the anonymous lifetime as defined here...
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--> $DIR/issue-20831-debruijn.rs:28:18
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^
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note: ...but the lifetime must also be valid for the lifetime `'a` as defined here...
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--> $DIR/issue-20831-debruijn.rs:26:6
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LL | impl<'a> Publisher<'a> for MyStruct<'a> {
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| ^^
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note: ...so that the types are compatible
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--> $DIR/issue-20831-debruijn.rs:28:33
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: expected `<MyStruct<'a> as Publisher<'_>>`
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found `<MyStruct<'_> as Publisher<'_>>`
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error: lifetime may not live long enough
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--> $DIR/issue-20831-debruijn.rs:28:5
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LL | impl<'a> Publisher<'a> for MyStruct<'a> {
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| -- lifetime `'a` defined here
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LL | type Output = u64;
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| | |
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| | has type `Box<dyn Subscriber<Input = <MyStruct<'_> as Publisher<'1>>::Output>>`
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| requires that `'a` must outlive `'1`
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error: lifetime may not live long enough
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--> $DIR/issue-20831-debruijn.rs:28:5
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LL | impl<'a> Publisher<'a> for MyStruct<'a> {
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| -- lifetime `'a` defined here
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LL | type Output = u64;
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| | |
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| | has type `Box<dyn Subscriber<Input = <MyStruct<'_> as Publisher<'1>>::Output>>`
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| requires that `'1` must outlive `'a`
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0495`.
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