mirror of https://github.com/rust-lang/rust
43 lines
2.0 KiB
Plaintext
43 lines
2.0 KiB
Plaintext
error: lifetime may not live long enough
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--> $DIR/hr-subtype.rs:48:13
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LL | fn subtype<'x, 'y: 'x, 'z: 'y>() {
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| -- -- lifetime `'y` defined here
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| lifetime `'x` defined here
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LL | gimme::<$t2>(None::<$t1>);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'x` must outlive `'y`
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...
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LL | / check! { free_inv_x_vs_free_inv_y: (fn(Inv<'x>),
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LL | | fn(Inv<'y>)) }
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| |______________- in this macro invocation
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= help: consider adding the following bound: `'x: 'y`
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= note: requirement occurs because of the type `Inv<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `Inv<'a>` is invariant over the parameter `'a`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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= note: this error originates in the macro `check` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: lifetime may not live long enough
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--> $DIR/hr-subtype.rs:54:13
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LL | fn supertype<'x, 'y: 'x, 'z: 'y>() {
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| -- -- lifetime `'y` defined here
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| lifetime `'x` defined here
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LL | gimme::<$t1>(None::<$t2>);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'x` must outlive `'y`
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...
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LL | / check! { free_inv_x_vs_free_inv_y: (fn(Inv<'x>),
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LL | | fn(Inv<'y>)) }
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| |______________- in this macro invocation
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= help: consider adding the following bound: `'x: 'y`
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= note: requirement occurs because of the type `Inv<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `Inv<'a>` is invariant over the parameter `'a`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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= note: this error originates in the macro `check` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: aborting due to 2 previous errors
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