| { |
| "message": "cannot find type `Iter` in this scope", |
| "code": { |
| "code": "E0412", |
| "explanation": "A used type name is not in scope. |
| |
| Erroneous code examples: |
| |
| ```compile_fail,E0412 |
| impl Something {} // error: type name `Something` is not in scope |
| |
| // or: |
| |
| trait Foo { |
| fn bar(N); // error: type name `N` is not in scope |
| } |
| |
| // or: |
| |
| fn foo(x: T) {} // type name `T` is not in scope |
| ``` |
| |
| To fix this error, please verify you didn't misspell the type name, you did |
| declare it or imported it into the scope. Examples: |
| |
| ``` |
| struct Something; |
| |
| impl Something {} // ok! |
| |
| // or: |
| |
| trait Foo { |
| type N; |
| |
| fn bar(_: Self::N); // ok! |
| } |
| |
| // or: |
| |
| fn foo<T>(x: T) {} // ok! |
| ``` |
| |
| Another case that causes this error is when a type is imported into a parent |
| module. To fix this, you can follow the suggestion and use File directly or |
| `use super::File;` which will import the types from the parent namespace. An |
| example that causes this error is below: |
| |
| ```compile_fail,E0412 |
| use std::fs::File; |
| |
| mod foo { |
| fn some_function(f: File) {} |
| } |
| ``` |
| |
| ``` |
| use std::fs::File; |
| |
| mod foo { |
| // either |
| use super::File; |
| // or |
| // use std::fs::File; |
| fn foo(f: File) {} |
| } |
| # fn main() {} // don't insert it for us; that'll break imports |
| ``` |
| " |
| }, |
| "level": "error", |
| "spans": [ |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 541, |
| "byte_end": 545, |
| "line_start": 12, |
| "line_end": 12, |
| "column_start": 12, |
| "column_end": 16, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": " let x: Iter;", |
| "highlight_start": 12, |
| "highlight_end": 16 |
| } |
| ], |
| "label": "not found in this scope", |
| "suggested_replacement": null, |
| "suggestion_applicability": null, |
| "expansion": null |
| } |
| ], |
| "children": [ |
| { |
| "message": "consider importing one of these items", |
| "code": null, |
| "level": "help", |
| "spans": [ |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::binary_heap::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::btree_map::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::btree_set::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::hash_map::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::hash_set::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::linked_list::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::collections::vec_deque::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::option::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::path::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::result::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::slice::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| }, |
| { |
| "file_name": "$DIR/use_suggestion_json.rs", |
| "byte_start": 518, |
| "byte_end": 518, |
| "line_start": 11, |
| "line_end": 11, |
| "column_start": 1, |
| "column_end": 1, |
| "is_primary": true, |
| "text": [ |
| { |
| "text": "fn main() {", |
| "highlight_start": 1, |
| "highlight_end": 1 |
| } |
| ], |
| "label": null, |
| "suggested_replacement": "use std::sync::mpsc::Iter; |
| |
| ", |
| "suggestion_applicability": "Unspecified", |
| "expansion": null |
| } |
| ], |
| "children": [], |
| "rendered": null |
| } |
| ], |
| "rendered": "\u001b[0m\u001b[1m\u001b[38;5;9merror[E0412]\u001b[0m\u001b[0m\u001b[1m: cannot find type `Iter` in this scope\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0m$DIR/use_suggestion_json.rs:12:12\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m\u001b[1m\u001b[38;5;12mLL\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m let x: Iter;\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;9m^^^^\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;9mnot found in this scope\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m\u001b[1m\u001b[38;5;14mhelp\u001b[0m\u001b[0m: consider importing one of these items\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m\u001b[1m\u001b[38;5;12mLL\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0muse std::collections::binary_heap::Iter;\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m\u001b[1m\u001b[38;5;12mLL\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0muse std::collections::btree_map::Iter;\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m\u001b[1m\u001b[38;5;12mLL\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0muse std::collections::btree_set::Iter;\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m\u001b[1m\u001b[38;5;12mLL\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0muse std::collections::hash_map::Iter;\u001b[0m |
| \u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m |
| \u001b[0m and 8 other candidates\u001b[0m |
| |
| " |
| } |
| { |
| "message": "aborting due to previous error", |
| "code": null, |
| "level": "error", |
| "spans": [], |
| "children": [], |
| "rendered": "\u001b[0m\u001b[1m\u001b[38;5;9merror\u001b[0m\u001b[0m\u001b[1m: aborting due to previous error\u001b[0m |
| |
| " |
| } |
| { |
| "message": "For more information about this error, try `rustc --explain E0412`.", |
| "code": null, |
| "level": "failure-note", |
| "spans": [], |
| "children": [], |
| "rendered": "\u001b[0m\u001b[1mFor more information about this error, try `rustc --explain E0412`.\u001b[0m |
| " |
| } |