error[E0596]: cannot borrow immutable local variable `x` as mutable | |
--> $DIR/huge_multispan_highlight.rs:100:18 | |
| | |
LL | let x = "foo"; | |
| - help: make this binding mutable: `mut x` | |
... | |
LL | let y = &mut x; //~ ERROR cannot borrow | |
| ^ cannot borrow mutably | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0596`. |