From the readme of vgo updated recently :
This repository holds a standalone implementation of a version-aware go command, allowing users with a Go 1.10 toolchain to use the new Go 1.11 module support.
The code in this repo is auto-generated from and should behave exactly like the Go 1.11 go command, with two changes:
It behaves as if the GO111MODULE variable defaults to on. When using a Go 1.10 toolchain, go vet during go test is disabled.
