1 error: at least one trait must be specified
2 --> $DIR/unused_generic_param.rs:6:39
4 LL | existential type PartiallyDefined<T>: 'static;
7 error: at least one trait must be specified
8 --> $DIR/unused_generic_param.rs:13:40
10 LL | existential type PartiallyDefined2<T>: 'static;
13 error: aborting due to 2 previous errors