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error[E0106]: missing lifetime specifier
--> $DIR/issue-19707.rs:3:28
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LL | type Foo = fn(&u8, &u8) -> &u8; //~ ERROR missing lifetime specifier
| ^ expected lifetime parameter
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= help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or argument 2
error[E0106]: missing lifetime specifier
--> $DIR/issue-19707.rs:5:27
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LL | fn bar<F: Fn(&u8, &u8) -> &u8>(f: &F) {} //~ ERROR missing lifetime specifier
| ^ expected lifetime parameter
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= help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or argument 2
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0106`.
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