1 warning[E0503]: cannot use `y` because it was mutably borrowed
2 --> $DIR/borrowck-anon-fields-variant.rs:17:7
4 LL | Foo::Y(ref mut a, _) => a,
5 | --------- borrow of `y.0` occurs here
7 LL | Foo::Y(_, ref mut b) => b,
8 | ^^^^^^^^^^^^^^^^^^^^ use of borrowed `y.0`
11 | ------- borrow later used here
13 = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
14 = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
15 = note: for more information, try `rustc --explain E0729`
17 error[E0503]: cannot use `y` because it was mutably borrowed
18 --> $DIR/borrowck-anon-fields-variant.rs:37:7
20 LL | Foo::Y(ref mut a, _) => a,
21 | --------- borrow of `y.0` occurs here
23 LL | Foo::Y(ref mut b, _) => b,
24 | ^^^^^^^^^^^^^^^^^^^^ use of borrowed `y.0`
27 | ------- borrow later used here
29 error[E0499]: cannot borrow `y.0` as mutable more than once at a time
30 --> $DIR/borrowck-anon-fields-variant.rs:37:14
32 LL | Foo::Y(ref mut a, _) => a,
33 | --------- first mutable borrow occurs here
35 LL | Foo::Y(ref mut b, _) => b,
36 | ^^^^^^^^^ second mutable borrow occurs here
39 | ------- first borrow later used here
41 error: aborting due to 2 previous errors
43 Some errors have detailed explanations: E0499, E0503.
44 For more information about an error, try `rustc --explain E0499`.