error[E0158]: associated consts cannot be referenced in patterns
  --> $DIR/associated-const-type-parameter-arms.rs:20:9
   |
LL |         A::X => println!("A::X"),
   |         ^^^^

error[E0158]: associated consts cannot be referenced in patterns
  --> $DIR/associated-const-type-parameter-arms.rs:22:9
   |
LL |         B::X => println!("B::X"),
   |         ^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0158`.