Address newly added feature gates (#692)

Author: JohnTitor

ices/53092.rs

@@ -1,5 +1,7 @@
 #![feature(const_fn)]
 #![feature(const_fn_union)]
+#![feature(impl_trait_in_bindings)]
+#![feature(min_type_alias_impl_trait)]
 #![feature(type_alias_impl_trait)]
 #![feature(untagged_unions)]
 

ices/74280.rs

@@ -1,3 +1,4 @@
+#![feature(min_type_alias_impl_trait)]
 #![feature(type_alias_impl_trait)]
 
 type Test = impl Copy;

ices/77987.rs

@@ -1,3 +1,4 @@
+#![feature(min_type_alias_impl_trait)]
 #![feature(type_alias_impl_trait)]
 
 trait Foo<T> {}

ices/78450.rs

@@ -1,3 +1,4 @@
+#![feature(min_type_alias_impl_trait)]
 #![feature(type_alias_impl_trait)]
 #![no_std]
 #![crate_type = "lib"]