error[E0599]: no associated item named `XXX` found for type `u32` in the current scope
  --> $DIR/no-double-error.rs:18:9
   |
LL |         u32::XXX => { } //~ ERROR no associated item named
   |         ^^^^^^^^ associated item not found in `u32`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0599`.