error[E0381]: use of possibly uninitialized variable: `x`
  --> $DIR/loop-proper-liveness.rs:19:22
   |
LL |     println!("{:?}", x); //~ ERROR use of possibly uninitialized variable
   |                      ^ use of possibly uninitialized `x`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0381`.