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+error[E0038]: the trait `B` cannot be made into an object
+ --> $DIR/issue-98500.rs:11:14
+ |
+LL | struct S(Box<dyn B>);
+ | ^^^^^ `B` cannot be made into an object
+ |
+note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
+ --> $DIR/auxiliary/not-object-safe.rs:4:8
+ |
+LL | fn f();
+ | ^ ...because associated function `f` has no `self` parameter
+LL | fn f2(self: &Arc<Self>);
+ | ^^ ...because method `f2`'s `self` parameter cannot be dispatched on
+ |
+ ::: $DIR/issue-98500.rs:5:11
+ |
+LL | pub trait B where
+ | - this trait cannot be made into an object...
+ = help: consider moving `f` to another trait
+ = help: consider moving `f2` to another trait
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0038`.