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error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates
--> $DIR/issue-29861.rs:11:6
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LL | impl<'a, T: 'a> MakeRef2 for T {
| ^^ unconstrained lifetime parameter
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-29861.rs:16:43
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LL | fn foo() -> <String as MakeRef2>::Ref2 { &String::from("foo") }
| ^^^^^^^^^^^^^^^^^^^ -- borrow later used here
| | |
| | temporary value is freed at the end of this statement
| creates a temporary value which is freed while still in use
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= note: consider using a `let` binding to create a longer lived value
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0207, E0716.
For more information about an error, try `rustc --explain E0207`.
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