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error[E0499]: cannot borrow `v` as mutable more than once at a time
--> $DIR/borrowck-vec-pattern-loan-from-mut.rs:6:13
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LL | let vb: &mut [isize] = &mut v;
| ------ first mutable borrow occurs here
...
LL | v.push(tail[0] + tail[1]);
| ^^^^^^^-------^^^^^^^^^^^
| | |
| | first borrow later used here
| second mutable borrow occurs here
error: aborting due to previous error
For more information about this error, try `rustc --explain E0499`.
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