Fix rebase

src/libsyntax/lib.rs

@@ -11,7 +11,6 @@
 #![feature(const_fn)]
 #![feature(const_transmute)]
 #![feature(crate_visibility_modifier)]
-#![feature(decl_macro)]
 #![feature(label_break_value)]
 #![feature(nll)]
 #![feature(try_trait)]

src/libsyntax_expand/lib.rs

@@ -1,4 +1,5 @@
 #![feature(crate_visibility_modifier)]
+#![feature(decl_macro)]
 #![feature(proc_macro_diagnostic)]
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_span)]

src/libsyntax_expand/placeholders.rs

@@ -1,7 +1,7 @@
 use crate::base::ExtCtxt;
 use crate::expand::{AstFragment, AstFragmentKind};
 
-use syntax::ast::{self, NodeId};
+use syntax::ast;
 use syntax::source_map::{DUMMY_SP, dummy_spanned};
 use syntax::tokenstream::TokenStream;
 use syntax::mut_visit::*;