CI: autofix rust code.

src/parser/target.rs

@@ -32,7 +32,7 @@ pub fn target<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str,
             class: ExitClass::Beta,
             exit_matcher: &target_end,
         }));
-    let (remaining, body) = recognize(many_till(
+    let (remaining, _body) = recognize(many_till(
         anychar,
         parser_with_context!(exit_matcher_parser)(&parser_context),
     ))(remaining)?;