If you’re following the commands on the wiki, I’m not sure they are correct anymore. when I started building SV code for the first time, this was the guidance i was given.
https://discuss.ardupilot.org/t/how-to-upgade-skyviper-to-latest-arducopter/27124/5
Also, I’m assuming you used Vagrant to setup your environment? I was able to successfully build it within Ubuntu 10.X Windows Subsystem for Linux without issues.