diff --git a/tests/ui/auxiliary/proc_macro_attr.rs b/tests/ui/auxiliary/proc_macro_attr.rs
index de670cdfc31f1..e370a98df1acf 100644
--- a/tests/ui/auxiliary/proc_macro_attr.rs
+++ b/tests/ui/auxiliary/proc_macro_attr.rs
@@ -3,6 +3,7 @@
 
 #![crate_type = "proc-macro"]
 #![feature(repr128, proc_macro_hygiene, proc_macro_quote, box_patterns)]
+#![allow(incomplete_features)]
 #![allow(clippy::useless_conversion)]
 
 extern crate proc_macro;
diff --git a/tests/ui/auxiliary/proc_macro_derive.rs b/tests/ui/auxiliary/proc_macro_derive.rs
index 3df8be6c23230..cd5a5ae0aa75a 100644
--- a/tests/ui/auxiliary/proc_macro_derive.rs
+++ b/tests/ui/auxiliary/proc_macro_derive.rs
@@ -3,6 +3,7 @@
 
 #![crate_type = "proc-macro"]
 #![feature(repr128, proc_macro_quote)]
+#![allow(incomplete_features)]
 
 extern crate proc_macro;
 
diff --git a/tests/ui/crashes/auxiliary/proc_macro_crash.rs b/tests/ui/crashes/auxiliary/proc_macro_crash.rs
index 619d11cefc46d..ed8e7a708a5e2 100644
--- a/tests/ui/crashes/auxiliary/proc_macro_crash.rs
+++ b/tests/ui/crashes/auxiliary/proc_macro_crash.rs
@@ -6,6 +6,7 @@
 // contain a proc-macro.
 
 #![feature(repr128)]
+#![allow(incomplete_features)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;