error: `&'static str` is forbidden as the type of a const generic parameter --> $DIR/slice-const-param-mismatch.rs:7:29 | LL | struct ConstString; | ^^^^^^^^^^^^ | = note: the only supported types are integers, `bool` and `char` = help: add `#![feature(adt_const_params)]` to the crate attributes to enable more complex and user defined types error: `&'static [u8]` is forbidden as the type of a const generic parameter --> $DIR/slice-const-param-mismatch.rs:9:28 | LL | struct ConstBytes; | ^^^^^^^^^^^^^ | = note: the only supported types are integers, `bool` and `char` = help: add `#![feature(adt_const_params)]` to the crate attributes to enable more complex and user defined types error: aborting due to 2 previous errors