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error[E0658]: trait aliases are experimental
  --> $DIR/generic-default-in-dyn.rs:1:1
   |
LL | trait SendEqAlias<T> = PartialEq;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #41517 <https://github.com/rust-lang/rust/issues/41517> for more information
   = help: add `#![feature(trait_alias)]` to the crate attributes to enable

error[E0393]: the type parameter `Rhs` must be explicitly specified
  --> $DIR/generic-default-in-dyn.rs:4:19
   |
LL | struct Foo<T>(dyn SendEqAlias<T>);
   |                   ^^^^^^^^^^^^^^ missing reference to `Rhs`
  --> $SRC_DIR/core/src/cmp.rs:LL:COL
   |
   = note: type parameter `Rhs` must be specified for this
   |
   = note: because of the default `Self` reference, type parameters must be specified on object types

error[E0393]: the type parameter `Rhs` must be explicitly specified
  --> $DIR/generic-default-in-dyn.rs:7:19
   |
LL | struct Bar<T>(dyn SendEqAlias<T>, T);
   |                   ^^^^^^^^^^^^^^ missing reference to `Rhs`
  --> $SRC_DIR/core/src/cmp.rs:LL:COL
   |
   = note: type parameter `Rhs` must be specified for this
   |
   = note: because of the default `Self` reference, type parameters must be specified on object types

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0393, E0658.
For more information about an error, try `rustc --explain E0393`.