error[E0515]: cannot return value referencing local variable `rawLines` --> $DIR/issue-13497-2.rs:3:5 | LL | rawLines | ^------- | | | _____`rawLines` is borrowed here | | LL | | .iter().map(|l| l.trim()).collect() | |___________________________________________^ returns a value referencing data owned by the current function error: aborting due to previous error For more information about this error, try `rustc --explain E0515`.