--- /dev/null
+path=example.com/m
+version=v1.0.0
+hash=h1:XduFAgX/GaspZa8Jv4pfzoGEzNaU/r88PiCunijw5ok=
+-- go.mod --
+module example.com/m
+
+go 1.13
+-- sub/go.mod --
+module example.com/m/sub
+-- sub/x.go' --
+invalid name, but this shouldn't be read