tests/rustdoc-ui/proc_macro_bug.stderr


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error: the `#[proc_macro_derive]` attribute is only usable with crates of the `proc-macro` crate type
  --> $DIR/proc_macro_bug.rs:8:1
   |
LL | #[proc_macro_derive(DeriveA)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error