error[E0597]: `raw_lines` does not live long enough
  --> $DIR/drop-with-active-borrows-2.rs:3:5
   |
LL |     raw_lines.iter().map(|l| l.trim()).collect()
   |     ^^^^^^^^^ borrowed value does not live long enough
LL |
LL | }
   | - borrowed value only lives until here
   |
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 1:24...
  --> $DIR/drop-with-active-borrows-2.rs:1:24
   |
LL | fn read_lines_borrowed<'a>() -> Vec<&'a str> {
   |                        ^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0597`.