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error[E0412]: cannot find type `Missing` in this scope
--> $DIR/issue-110157.rs:6:12
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LL | F: Fn(&Missing) -> Result<I, ()>,
| ^^^^^^^ not found in this scope
error[E0412]: cannot find type `Missing` in this scope
--> $DIR/issue-110157.rs:8:24
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LL | I: Iterator<Item = Missing>,
| ^^^^^^^ not found in this scope
error[E0283]: type annotations needed
--> $DIR/issue-110157.rs:3:31
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LL | impl<'tcx, F, I> Iterator for NeedsDropTypes<'tcx, F>
| ^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type for type parameter `I`
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= note: cannot satisfy `_: Iterator`
note: required for `NeedsDropTypes<'tcx, F>` to implement `Iterator`
--> $DIR/issue-110157.rs:3:18
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LL | impl<'tcx, F, I> Iterator for NeedsDropTypes<'tcx, F>
| ^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^
...
LL | I: Iterator<Item = Missing>,
| ------------------------ unsatisfied trait bound introduced here
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0283, E0412.
For more information about an error, try `rustc --explain E0283`.
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