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error[E0277]: `()` is not an iterator
--> $DIR/issue-72911.rs:16:20
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LL | fn lint_files() -> impl Iterator<Item = foo::MissingItem> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `()` is not an iterator
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= help: the trait `Iterator` is not implemented for `()`
error[E0433]: failed to resolve: use of undeclared crate or module `foo`
--> $DIR/issue-72911.rs:11:33
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LL | fn gather_from_file(dir_entry: &foo::MissingItem) -> impl Iterator<Item = Lint> {
| ^^^ use of undeclared crate or module `foo`
error[E0433]: failed to resolve: use of undeclared crate or module `foo`
--> $DIR/issue-72911.rs:16:41
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LL | fn lint_files() -> impl Iterator<Item = foo::MissingItem> {
| ^^^ use of undeclared crate or module `foo`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0277, E0433.
For more information about an error, try `rustc --explain E0277`.
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