error[E0277]: the trait bound `&dyn Trait: Trait` is not satisfied --> $DIR/coherence-unsafe-trait-object-impl.rs:15:13 | LL | takes_t(t); | ------- ^ the trait `Trait` is not implemented for `&dyn Trait` | | | required by a bound introduced by this call | note: required by a bound in `takes_t` --> $DIR/coherence-unsafe-trait-object-impl.rs:10:15 | LL | fn takes_t(s: S) { | ^^^^^ required by this bound in `takes_t` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.