1 error[E0433]: failed to resolve: use of undeclared crate or module `foo`
2 --> $DIR/issue-72911.rs:12:33
4 LL | fn gather_from_file(dir_entry: &foo::MissingItem) -> impl Iterator<Item = Lint> {
5 | ^^^ use of undeclared crate or module `foo`
7 error[E0433]: failed to resolve: use of undeclared crate or module `foo`
8 --> $DIR/issue-72911.rs:17:41
10 LL | fn lint_files() -> impl Iterator<Item = foo::MissingItem> {
11 | ^^^ use of undeclared crate or module `foo`
13 error[E0720]: cannot resolve opaque type
14 --> $DIR/issue-72911.rs:7:24
16 LL | pub fn gather_all() -> impl Iterator<Item = Lint> {
17 | ^^^^^^^^^^^^^^^^^^^^^^^^^^ recursive opaque type
19 LL | lint_files().flat_map(|f| gather_from_file(&f))
20 | -----------------------------------------------
22 | returning here with type `FlatMap<impl Iterator, [type error], [closure@$DIR/issue-72911.rs:9:27: 9:51]>`
23 | returning here with type `FlatMap<impl Iterator, [type error], [closure@$DIR/issue-72911.rs:9:27: 9:51]>`
25 LL | fn gather_from_file(dir_entry: &foo::MissingItem) -> impl Iterator<Item = Lint> {
26 | -------------------------- returning this opaque type `FlatMap<impl Iterator, [type error], [closure@$DIR/issue-72911.rs:9:27: 9:51]>`
28 LL | fn lint_files() -> impl Iterator<Item = foo::MissingItem> {
29 | -------------------------------------- returning this opaque type `FlatMap<impl Iterator, [type error], [closure@$DIR/issue-72911.rs:9:27: 9:51]>`
31 error: aborting due to 3 previous errors
33 Some errors have detailed explanations: E0433, E0720.
34 For more information about an error, try `rustc --explain E0433`.