error[E0425]: cannot find value `meows` in this scope
  --> $DIR/class-missing-self.rs:19:7
   |
LL |       meows += 1; //~ ERROR cannot find value `meows` in this scope
   |       ^^^^^ help: try: `self.meows`

error[E0425]: cannot find function `sleep` in this scope
  --> $DIR/class-missing-self.rs:20:7
   |
LL |       sleep();     //~ ERROR cannot find function `sleep` in this scope
   |       ^^^^^ not found in this scope
help: possible candidate is found in another module, you can import it into scope
   |
LL | use std::thread::sleep;
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0425`.