match attr.style {
ast::AttrStyle::Inner if unique_attr.is_none() => unique_attr = Some(attr.clone()),
ast::AttrStyle::Inner => {
- sess.struct_span_err(attr.span, &format!("`{}` is defined multiple times", name))
+ sess.struct_span_err(attr.span, &format!("`{name}` is defined multiple times"))
.span_note(unique_attr.as_ref().unwrap().span, "first definition found here")
.emit();
},
ast::AttrStyle::Outer => {
- sess.span_err(attr.span, &format!("`{}` cannot be an outer attribute", name));
+ sess.span_err(attr.span, &format!("`{name}` cannot be an outer attribute"));
},
}
}