| error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable | |
| --> $DIR/get_default.rs:32:17 | |
| | | |
| LL | match map.get() { | |
| | --- immutable borrow occurs here | |
| LL | Some(v) => { | |
| LL | map.set(String::new()); // Both AST and MIR error here | |
| | ^^^ mutable borrow occurs here | |
| LL | | |
| LL | return v; | |
| | - immutable borrow later used here | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0502`. |