error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `<-`
  --> $DIR/bad.rs:5:7
   |
LL |     x <- y;
   |       ^^ expected one of 8 possible tokens here

error: expected expression, found keyword `in`
  --> $DIR/bad.rs:11:5
   |
LL |     in(foo) { bar };
   |     ^^ expected expression

error[E0308]: mismatched types
  --> $DIR/bad.rs:5:5
   |
LL | fn foo() {
   |          - possibly return type missing here?
LL |     let (x, y) = (0, 0);
LL |     x <- y;
   |     ^ expected (), found integer
   |
   = note: expected type `()`
              found type `{integer}`

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0308`.