restore function_missing

src/lints/function_missing.ron

@@ -45,7 +45,7 @@ SemverQuery(
         "true": true,
     },
     error_message: "A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely.",
-    per_result_error_template: Some("function {{join \"::\" path}}"),
+    per_result_error_template: Some("function {{join \"::\" path}}, previously in file {{span_filename}}:{{span_begin_line}}"),
     witness: (
         hint_template: r#"{{join "::" path}}(...);"#,
     ),