diff --git a/rust b/rust
index 9457dcc..81c2bf4 160000
--- a/rust
+++ b/rust
@@ -1 +1 @@
-Subproject commit 9457dccae8cc9576bd9e4795864dd9a6ff602375
+Subproject commit 81c2bf4e51647295d3d92952dbb0464b460df0c3
diff --git a/rust-toolchain b/rust-toolchain
index 9d6a90c..1bcdc35 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2018-03-03
+nightly-2018-03-04