error[E0277]: the trait bound `String: Copy` is not satisfied
  --> $DIR/synthetic-hir-has-parent.rs:7:9
   |
LL |         String: Copy;
   |         ^^^^^^^^^^^^ the trait `Copy` is not implemented for `String`
   |
   = help: see issue #48214
help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
   |
LL + #![feature(trivial_bounds)]
   |

error[E0277]: the trait bound `String: Copy` is not satisfied
  --> $DIR/synthetic-hir-has-parent.rs:4:18
   |
LL |     fn demo() -> impl Foo
   |                  ^^^^^^^^ the trait `Copy` is not implemented for `String`
   |
   = help: see issue #48214
help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
   |
LL + #![feature(trivial_bounds)]
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.