error[E0081]: discriminant value `1` assigned more than once
  --> $DIR/issue-15524.rs:3:1
   |
LL | enum Foo {
   | ^^^^^^^^
...
LL |     A = 1,
   |         - first assignment of `1`
LL |     B = 1,
   |         - second assignment of `1`

error[E0081]: discriminant value `1` assigned more than once
  --> $DIR/issue-15524.rs:3:1
   |
LL | enum Foo {
   | ^^^^^^^^
...
LL |     A = 1,
   |         - first assignment of `1`
LL |     B = 1,
LL |     C = 0,
   |     ----- assigned discriminant for `D` was incremented from this discriminant
LL |     D,
   |     - second assignment of `1`

error[E0081]: discriminant value `1` assigned more than once
  --> $DIR/issue-15524.rs:3:1
   |
LL | enum Foo {
   | ^^^^^^^^
...
LL |     A = 1,
   |         - first assignment of `1`
...
LL |     E = N,
   |         - second assignment of `1`

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0081`.