error[E0369]: cannot add `u32` to `u32`
  --> $DIR/bad-add-impl.rs:16:10
   |
LL |     1u32 + 1u32;
   |     ---- ^ ---- u32
   |     |
   |     u32

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0369`.