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+error[E0275]: overflow evaluating the requirement `NoClone: Magic`
+  --> $DIR/supertrait.rs:13:18
+   |
+LL |     let (a, b) = copy(NoClone);
+   |                  ^^^^
+   |
+note: required for `NoClone` to implement `Magic`
+  --> $DIR/supertrait.rs:5:16
+   |
+LL | impl<T: Magic> Magic for T {}
+   |                ^^^^^     ^
+note: required by a bound in `copy`
+  --> $DIR/supertrait.rs:7:12
+   |
+LL | fn copy<T: Magic>(x: T) -> (T, T) { (x, x) }
+   |            ^^^^^ required by this bound in `copy`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0275`.