6982785f18
The `impl_trait_overcaptures` lint is part of the migration to Rust 2024 and the Lifetime Capture Rules 2024. Now that we've stabilized precise capturing (RFC 3617), let's tie this lint to the `rust_2024_compatibility` lint group.
84 lines
3.8 KiB
Plaintext
84 lines
3.8 KiB
Plaintext
error: `impl Sized` will capture more lifetimes than possibly intended in edition 2024
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--> $DIR/overcaptures-2024.rs:6:29
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LL | fn named<'a>(x: &'a i32) -> impl Sized { *x }
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| ^^^^^^^^^^
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= warning: this changes meaning in Rust 2024
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= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/rpit-lifetime-capture.html>
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note: specifically, this lifetime is in scope but not mentioned in the type's bounds
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--> $DIR/overcaptures-2024.rs:6:10
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LL | fn named<'a>(x: &'a i32) -> impl Sized { *x }
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| ^^
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= note: all lifetimes in scope will be captured by `impl Trait`s in edition 2024
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note: the lint level is defined here
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--> $DIR/overcaptures-2024.rs:4:9
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LL | #![deny(impl_trait_overcaptures)]
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| ^^^^^^^^^^^^^^^^^^^^^^^
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help: use the precise capturing `use<...>` syntax to make the captures explicit
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LL | fn named<'a>(x: &'a i32) -> impl Sized + use<> { *x }
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| +++++++
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error: `impl Sized` will capture more lifetimes than possibly intended in edition 2024
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--> $DIR/overcaptures-2024.rs:10:25
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LL | fn implicit(x: &i32) -> impl Sized { *x }
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| ^^^^^^^^^^
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= warning: this changes meaning in Rust 2024
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= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/rpit-lifetime-capture.html>
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note: specifically, this lifetime is in scope but not mentioned in the type's bounds
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--> $DIR/overcaptures-2024.rs:10:16
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LL | fn implicit(x: &i32) -> impl Sized { *x }
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| ^
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= note: all lifetimes in scope will be captured by `impl Trait`s in edition 2024
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help: use the precise capturing `use<...>` syntax to make the captures explicit
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LL | fn implicit(x: &i32) -> impl Sized + use<> { *x }
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| +++++++
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error: `impl Sized + '_` will capture more lifetimes than possibly intended in edition 2024
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--> $DIR/overcaptures-2024.rs:16:33
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LL | fn hello(&self, x: &i32) -> impl Sized + '_ { self }
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| ^^^^^^^^^^^^^^^
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= warning: this changes meaning in Rust 2024
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= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/rpit-lifetime-capture.html>
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note: specifically, this lifetime is in scope but not mentioned in the type's bounds
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--> $DIR/overcaptures-2024.rs:16:24
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LL | fn hello(&self, x: &i32) -> impl Sized + '_ { self }
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| ^
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= note: all lifetimes in scope will be captured by `impl Trait`s in edition 2024
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help: use the precise capturing `use<...>` syntax to make the captures explicit
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LL | fn hello(&self, x: &i32) -> impl Sized + '_ + use<'_> { self }
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| +++++++++
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error: `impl Sized` will capture more lifetimes than possibly intended in edition 2024
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--> $DIR/overcaptures-2024.rs:28:47
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LL | fn hrtb() -> impl for<'a> Higher<'a, Output = impl Sized> {}
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| ^^^^^^^^^^
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= warning: this changes meaning in Rust 2024
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= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/rpit-lifetime-capture.html>
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note: specifically, this lifetime is in scope but not mentioned in the type's bounds
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--> $DIR/overcaptures-2024.rs:28:23
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LL | fn hrtb() -> impl for<'a> Higher<'a, Output = impl Sized> {}
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| ^^
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= note: all lifetimes in scope will be captured by `impl Trait`s in edition 2024
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help: use the precise capturing `use<...>` syntax to make the captures explicit
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LL | fn hrtb() -> impl for<'a> Higher<'a, Output = impl Sized + use<>> {}
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| +++++++
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error: aborting due to 4 previous errors
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