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error: lifetime may not live long enough
--> $DIR/regions-variance-covariant-use-contravariant.rs:23:12
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LL | fn use_<'short,'long>(c: Covariant<'long>,
| ------ ----- lifetime `'long` defined here
| |
| lifetime `'short` defined here
...
LL | let _: Covariant<'short> = c;
| ^^^^^^^^^^^^^^^^^ type annotation requires that `'short` must outlive `'long`
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= help: consider adding the following bound: `'short: 'long`
error: aborting due to previous error
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