``` $ ./build can't load package: package github.com/coreos/etcd: src/github.com/coreos/etcd/go_version.go:3:1: expected 'package', found 'STRING' "etcd requires go 1.1 or greater to build" ```
@@ -0,0 +1,3 @@
+// +build !go1.1
+
+"etcd requires go 1.1 or greater to build"