mirror of https://github.com/rust-lang/rust
129 lines
5.9 KiB
Plaintext
129 lines
5.9 KiB
Plaintext
error[E0261]: use of undeclared lifetime name `'b`
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--> $DIR/nested-rpit-hrtb.rs:57:77
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LL | fn two_htrb_outlives() -> impl for<'a> Foo<'a, Assoc = impl for<'b> Sized + 'b> {}
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| ^^ undeclared lifetime
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= note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
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help: consider making the bound lifetime-generic with a new `'b` lifetime
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LL | fn two_htrb_outlives() -> impl for<'b, 'a> Foo<'a, Assoc = impl for<'b> Sized + 'b> {}
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| +++
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help: consider introducing lifetime `'b` here
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LL | fn two_htrb_outlives<'b>() -> impl for<'a> Foo<'a, Assoc = impl for<'b> Sized + 'b> {}
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| ++++
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error[E0261]: use of undeclared lifetime name `'b`
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--> $DIR/nested-rpit-hrtb.rs:65:82
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LL | fn two_htrb_outlives_uses() -> impl for<'a> Bar<'a, Assoc = impl for<'b> Sized + 'b> {}
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| ^^ undeclared lifetime
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help: consider making the bound lifetime-generic with a new `'b` lifetime
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LL | fn two_htrb_outlives_uses() -> impl for<'b, 'a> Bar<'a, Assoc = impl for<'b> Sized + 'b> {}
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| +++
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help: consider introducing lifetime `'b` here
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LL | fn two_htrb_outlives_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl for<'b> Sized + 'b> {}
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| ++++
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error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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--> $DIR/nested-rpit-hrtb.rs:25:69
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LL | fn one_hrtb_outlives() -> impl for<'a> Foo<'a, Assoc = impl Sized + 'a> {}
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| ^^
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note: lifetime declared here
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--> $DIR/nested-rpit-hrtb.rs:25:36
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LL | fn one_hrtb_outlives() -> impl for<'a> Foo<'a, Assoc = impl Sized + 'a> {}
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| ^^
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error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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--> $DIR/nested-rpit-hrtb.rs:29:68
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LL | fn one_hrtb_trait_param() -> impl for<'a> Foo<'a, Assoc = impl Qux<'a>> {}
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| ^^
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note: lifetime declared here
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--> $DIR/nested-rpit-hrtb.rs:29:39
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LL | fn one_hrtb_trait_param() -> impl for<'a> Foo<'a, Assoc = impl Qux<'a>> {}
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| ^^
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error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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--> $DIR/nested-rpit-hrtb.rs:32:74
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LL | fn one_hrtb_outlives_uses() -> impl for<'a> Bar<'a, Assoc = impl Sized + 'a> {}
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| ^^
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note: lifetime declared here
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--> $DIR/nested-rpit-hrtb.rs:32:41
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LL | fn one_hrtb_outlives_uses() -> impl for<'a> Bar<'a, Assoc = impl Sized + 'a> {}
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| ^^
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error: implementation of `Bar` is not general enough
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--> $DIR/nested-rpit-hrtb.rs:32:78
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LL | fn one_hrtb_outlives_uses() -> impl for<'a> Bar<'a, Assoc = impl Sized + 'a> {}
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| ^^ implementation of `Bar` is not general enough
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= note: `()` must implement `Bar<'a>`
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= note: ...but it actually implements `Bar<'0>`, for some specific lifetime `'0`
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error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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--> $DIR/nested-rpit-hrtb.rs:36:73
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LL | fn one_hrtb_trait_param_uses() -> impl for<'a> Bar<'a, Assoc = impl Qux<'a>> {}
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| ^^
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note: lifetime declared here
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--> $DIR/nested-rpit-hrtb.rs:36:44
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LL | fn one_hrtb_trait_param_uses() -> impl for<'a> Bar<'a, Assoc = impl Qux<'a>> {}
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| ^^
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error[E0277]: the trait bound `for<'a> &'a (): Qux<'b>` is not satisfied
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--> $DIR/nested-rpit-hrtb.rs:46:79
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LL | fn one_hrtb_mention_fn_trait_param_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl Qux<'b>> {}
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| ^^^^^^^^^^^^ the trait `for<'a> Qux<'b>` is not implemented for `&'a ()`
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= help: the trait `Qux<'_>` is implemented for `()`
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= help: for that trait implementation, expected `()`, found `&'a ()`
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error: implementation of `Bar` is not general enough
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--> $DIR/nested-rpit-hrtb.rs:50:93
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LL | fn one_hrtb_mention_fn_outlives_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl Sized + 'b> {}
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| ^^ implementation of `Bar` is not general enough
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= note: `()` must implement `Bar<'a>`
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= note: ...but it actually implements `Bar<'0>`, for some specific lifetime `'0`
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error[E0277]: the trait bound `for<'a, 'b> &'a (): Qux<'b>` is not satisfied
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--> $DIR/nested-rpit-hrtb.rs:61:64
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LL | fn two_htrb_trait_param_uses() -> impl for<'a> Bar<'a, Assoc = impl for<'b> Qux<'b>> {}
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| ^^^^^^^^^^^^^^^^^^^^ the trait `for<'a, 'b> Qux<'b>` is not implemented for `&'a ()`
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= help: the trait `Qux<'_>` is implemented for `()`
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= help: for that trait implementation, expected `()`, found `&'a ()`
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error: implementation of `Bar` is not general enough
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--> $DIR/nested-rpit-hrtb.rs:65:86
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LL | fn two_htrb_outlives_uses() -> impl for<'a> Bar<'a, Assoc = impl for<'b> Sized + 'b> {}
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| ^^ implementation of `Bar` is not general enough
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= note: `()` must implement `Bar<'a>`
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= note: ...but it actually implements `Bar<'0>`, for some specific lifetime `'0`
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error: aborting due to 11 previous errors
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Some errors have detailed explanations: E0261, E0277, E0657.
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For more information about an error, try `rustc --explain E0261`.
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