error: `&'static str` is forbidden as the type of a const generic parameter --> $DIR/slice-const-param.rs:8:40 | LL | pub fn function_with_str() -> &'static str { | ^^^^^^^^^^^^ | = note: the only supported types are integers, `bool` and `char` = note: more complex types are supported with `#[feature(const_generics)]` error: `&'static [u8]` is forbidden as the type of a const generic parameter --> $DIR/slice-const-param.rs:13:41 | LL | pub fn function_with_bytes() -> &'static [u8] { | ^^^^^^^^^^^^^ | = note: the only supported types are integers, `bool` and `char` = note: more complex types are supported with `#[feature(const_generics)]` error: aborting due to 2 previous errors