1 error[E0502]: cannot borrow `vec` as mutable because it is also borrowed as immutable
2 --> $DIR/two-phase-cannot-nest-mut-self-calls.rs:16:9
5 | --- --- immutable borrow later used by call
7 | immutable borrow occurs here
10 | ^^^ mutable borrow occurs here
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0502`.