warning: bounds on generic parameters are not enforced in type aliases
  --> $DIR/issue-67690-type-alias-bound-diagnostic-crash.rs:5:15
   |
LL | pub type T<P: Send + Send + Send> = P;
   |               ^^^^   ^^^^   ^^^^
   |
   = note: `#[warn(type_alias_bounds)]` on by default
help: the bound will not be checked when the type alias is used, and should be removed
   |
LL - pub type T<P: Send + Send + Send> = P;
LL + pub type T<P> = P;
   |

warning: 1 warning emitted