pin ruamel py3 install

Peter Amstutz · Peter Amstutz · commit d866c5354bbf · 2016-08-20T14:04:42.000-04:00
diff --git a/Makefile b/Makefile
@@ -185,6 +185,6 @@ jenkins:
 		sloccount.sc pep8_report.txt pylint_report.txt
 	if ! test -d env3 ; then virtualenv -p python3 env3 ; fi
 	. env3/bin/activate ; \
-	pip install -U mypy-lang typed-ast ruamel.yaml; ${MAKE} mypy
+	pip install -U mypy-lang typed-ast ruamel.yaml==0.12.4; ${MAKE} mypy
 
 FORCE:
