diff --git a/rust b/rust
index 81c2bf4..682992a 160000
--- a/rust
+++ b/rust
@@ -1 +1 @@
-Subproject commit 81c2bf4e51647295d3d92952dbb0464b460df0c3
+Subproject commit 682992abb9bedc835059f3483571188a596c0bf2
diff --git a/rust-toolchain b/rust-toolchain
index 1bcdc35..2cb5702 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2018-03-04
+nightly-2018-04-27