error[E0597]: `foo` does not live long enough
  --> $DIR/issue-40157.rs:2:53
   |
LL |     {println!("{:?}", match { let foo = vec![1, 2]; foo.get(1) } { x => x });}
   |                             ------------------------^^^---------
   |                             |                       |          |
   |                             |                       |          `foo` dropped here while still borrowed
   |                             |                       borrowed value does not live long enough
   |                             borrow later used here

error: aborting due to previous error

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