error[E0428]: the name `Baz` is defined multiple times
  --> $DIR/issue-36935.rs:7:1
   |
LL | struct Baz {
   | ^^^^^^^^^^
   | |
   | `Baz` redefined here
   | previous definition of the type `Baz` here
   |
   = note: `Baz` must be defined only once in the type namespace of this module

error: proc-macro derive panicked
  --> $DIR/issue-36935.rs:6:20
   |
LL | #[derive(Identity, Panic)]
   |                    ^^^^^
   |
   = help: message: panic-derive

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0428`.