datastructures: replace once_cell crate with an impl from std

2020-08-29 19:16:49 +01:00
parent 85fbf49ce0
commit 68500ffacb
8 changed files with 7 additions and 4 deletions
--- a/compiler/rustc_middle/src/lib.rs
+++ b/compiler/rustc_middle/src/lib.rs
@@ -38,6 +38,7 @@
 #![feature(exhaustive_patterns)]
 #![feature(extern_types)]
 #![feature(nll)]
+#![feature(once_cell)]
 #![feature(option_expect_none)]
 #![feature(or_patterns)]
 #![feature(min_specialization)]