error[E0431]: `self` import can only appear in an import list with a non-empty prefix
  --> $DIR/E0431.rs:1:6
   |
LL | use {self};
   |      ^^^^ can only appear in an import list with a non-empty prefix

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0431`.