Merge from rustc
diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index 30ba307..c986141 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-d1d8e386c5e84c4ba857f56c3291f73c27e2d62a
+bc4376fa73b636eb6f2c7d48b1f731d70f022c4b