warning: unused macro definition: `regex`
  --> $DIR/issue-70041.rs:4:14
   |
LL | macro_rules! regex {
   |              ^^^^^
   |
   = note: `#[warn(unused_macros)]` on by default

warning: unused import: `regex`
  --> $DIR/issue-70041.rs:10:5
   |
LL | use regex;
   |     ^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

warning: 2 warnings emitted