fix build (#260)

Author: andrewlock

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.100-preview.6.25358.103",
+    "version": "10.0.100-rc.1.25451.107",
     "rollForward": "disable",
     "allowPrerelease": true
   }