1 error[E0506]: cannot assign to `_a` because it is borrowed
2 --> $DIR/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.rs:19:9
5 | -- borrow of `_a` occurs here
7 LL | _a = 4; //[ast]~ ERROR cannot assign to `_a`
8 | ^^^^^^ assignment to borrowed `_a` occurs here
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0506`.