Migrate Sirupsen to sirupsen.

vendor/github.com/containerd/continuity/manifest_test_darwin.go

@@ -0,0 +1,23 @@
+// +build ignore
+
+package continuity
+
+import "os"
+
+var (
+	devNullResource = resource{
+		kind:  chardev,
+		path:  "/dev/null",
+		major: 3,
+		minor: 2,
+		mode:  0666 | os.ModeDevice | os.ModeCharDevice,
+	}
+
+	devZeroResource = resource{
+		kind:  chardev,
+		path:  "/dev/zero",
+		major: 3,
+		minor: 3,
+		mode:  0666 | os.ModeDevice | os.ModeCharDevice,
+	}
+)