src/test/ui/proc-macro/export-macro.stderr

error: cannot export macro_rules! macros from a `proc-macro` crate type currently
  --> $DIR/export-macro.rs:9:1
   |
LL | / macro_rules! foo {
LL | |     ($e:expr) => ($e)
LL | | }
   | |_^

error: aborting due to previous error