error[E0601]: `main` function not found in crate `enum_discrim_autosizing`
   |
   = note: consider adding a `main` function to `$DIR/enum-discrim-autosizing.rs`

error[E0081]: discriminant value `0` already exists
  --> $DIR/enum-discrim-autosizing.rs:18:12
   |
LL |     Au64 = 0,
   |            - first use of `0`
LL |     Bu64 = 0x8000_0000_0000_0000 //~ERROR already exists
   |            ^^^^^^^^^^^^^^^^^^^^^ enum already has `0`

error: aborting due to 2 previous errors

Some errors occurred: E0081, E0601.
For more information about an error, try `rustc --explain E0081`.