Some errors have detailed explanations: E0119, E0751.
For more information about an error, try `rustc --explain E0119`.
+Future incompatibility report: Future breakage diagnostic:
+warning: conflicting implementations of trait `Trait0` for type `(dyn std::marker::Send + 'static)`: (E0119)
+ --> $DIR/issue-33140-hack-boundaries.rs:10:1
+ |
+LL | impl Trait0 for dyn Send {}
+ | ------------------------ first implementation here
+LL | impl Trait0 for dyn Send {}
+ | ^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `(dyn std::marker::Send + 'static)`
+ |
+ = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+ = note: for more information, see issue #56484 <https://github.com/rust-lang/rust/issues/56484>
+note: the lint level is defined here
+ --> $DIR/issue-33140-hack-boundaries.rs:2:10
+ |
+LL | #![allow(order_dependent_trait_objects)]
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+