diff --git a/.cargo/config b/.cargo/config
index d97631d78..ad1052a4f 100644
--- a/.cargo/config
+++ b/.cargo/config
@@ -44,6 +44,6 @@ watch --clear
     -x fmt
     -x check-core
     -x test-core
-    -x clippy-core
     -x bench-core
 """
+#    -x clippy-core
diff --git a/rust-toolchain b/rust-toolchain
index 54e374d8d..7aa9bc85e 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2019-06-09
+nightly-2019-06-04