rust/src/test/ui/borrowck/borrowck-borrow-immut-deref-of-box-as-mut.nll.stderr
2018-12-25 21:08:33 -07:00

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error[E0596]: cannot borrow `*a` as mutable, as `a` is not declared as mutable
--> $DIR/borrowck-borrow-immut-deref-of-box-as-mut.rs:12:5
|
LL | let a: Box<_> = box A;
| - help: consider changing this to be mutable: `mut a`
LL | a.foo();
| ^ cannot borrow as mutable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0596`.