You hit this error because the compiler lacks the information to
determine the type of this variable. Erroneous code example:
-```compile_fail,E0102
+```compile_fail,E0282
// could be an array of anything
let x = []; // error: cannot determine a type for this local variable
```
// but `{}` was found in the type `{}`
E0567, // auto traits can not have type parameters
E0568, // auto-traits can not have predicates,
+ E0592, // duplicate definitions with name `{}`
}