-You attempted to use multiple types as bounds for a closure or trait object.
-Rust does not currently support this. A simple example that causes this error:
+Multiple types were used as bounds for a closure or trait object.
+
+Erroneous code example:
```compile_fail,E0225
fn main() {
}
```
+Rust does not currently support this.
+
Auto traits such as Send and Sync are an exception to this rule:
It's possible to have bounds of one non-builtin trait, plus any number of
auto traits. For example, the following compiles correctly: