error[E0426]: use of undeclared label `'label_use`
  --> $DIR/mixed-site-span.rs:15:9
   |
LL |         proc_macro_rules!();
   |         ^^^^^^^^^^^^^^^^^^^^
   |         |
   |         undeclared label `'label_use`
   |         in this macro invocation

error[E0425]: cannot find value `local_use` in this scope
  --> $DIR/mixed-site-span.rs:15:9
   |
LL |         proc_macro_rules!();
   |         ^^^^^^^^^^^^^^^^^^^^
   |         |
   |         not found in this scope
   |         in this macro invocation

error[E0425]: cannot find value `local_def` in this scope
  --> $DIR/mixed-site-span.rs:19:9
   |
LL |         local_def;
   |         ^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `ItemUse` in crate `$crate`
  --> $DIR/auxiliary/mixed-site-span.rs:14:1
   |
LL | / pub fn proc_macro_rules(input: TokenStream) -> TokenStream {
LL | |     if input.is_empty() {
LL | |         let id = |s| TokenTree::from(Ident::new(s, Span::mixed_site()));
LL | |         let item_def = id("ItemDef");
...  |
LL | |     }
LL | | }
   | |_^ not found in `$crate`
   | 
  ::: $DIR/mixed-site-span.rs:26:1
   |
LL |   pass_dollar_crate!();
   |   --------------------- in this macro invocation
   |
help: possible candidate is found in another module, you can import it into scope
   |
LL | use ItemUse;
   |

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0412, E0425, E0426.
For more information about an error, try `rustc --explain E0412`.