error[E0597]: borrowed value does not live long enough
  --> $DIR/slice-borrow.rs:16:28
   |
LL |         let x: &[isize] = &vec![1, 2, 3, 4, 5];
   |                            ^^^^^^^^^^^^^^^^^^^ temporary value does not live long enough
...
LL |     }
   |     - temporary value dropped here while still borrowed
LL |     y.use_ref();
LL | }
   | - temporary value needs to live until here
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to previous error

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