error[E0106]: missing lifetime specifier --> $DIR/issue-13497.rs:2:5 | LL | &str | ^ expected named lifetime parameter | = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static` | LL | &'static str | +++++++ help: instead, you are more likely to want to return an owned value | LL | String | ~~~~~~ error[E0515]: cannot return value referencing local variable `rawLines` --> $DIR/issue-13497.rs:5:5 | LL | rawLines.iter().map(|l| l.trim()).collect() | --------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | returns a value referencing data owned by the current function | `rawLines` is borrowed here error: aborting due to 2 previous errors Some errors have detailed explanations: E0106, E0515. For more information about an error, try `rustc --explain E0106`.