Fix CI

Author: ctkelley

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
           - '1.10' # LTS
           - '1'   # Current stable release
 #          - '~1.13.0-0'
-          - 'nightly'
+#          - 'nightly'
         os:
 #          - ubuntu-latest
           - macOS-latest