| $ cargo run |
| Compiling collections v0.1.0 (file:///projects/collections) |
| error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable |
| --> src/main.rs:6:5 |
| | |
| 4 | let first = &v[0]; |
| | - immutable borrow occurs here |
| 5 | |
| 6 | v.push(6); |
| | ^^^^^^^^^ mutable borrow occurs here |
| 7 | |
| 8 | println!("The first element is: {first}"); |
| | ------- immutable borrow later used here |
| |
| For more information about this error, try `rustc --explain E0502`. |
| error: could not compile `collections` (bin "collections") due to 1 previous error |
