error[E0433]: failed to resolve: use of undeclared type or module `HashMap` | |
--> $DIR/issue-31997-1.rs:20:19 | |
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LL | let mut map = HashMap::new(); | |
| ^^^^^^^ not found in this scope | |
| | |
help: consider importing this struct | |
| | |
LL | use std::collections::HashMap; | |
| | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0433`. |