/// Ideally, this code would be in libtest but for efficiency and error messages it lives here.
use crate::util::check_builtin_macro_attribute;
+use rustc_ast::ast;
+use rustc_ast::attr;
use rustc_ast_pretty::pprust;
use rustc_expand::base::*;
use rustc_span::source_map::respan;
use rustc_span::symbol::{sym, Symbol};
use rustc_span::Span;
-use syntax::ast;
-use syntax::attr;
use std::iter;