$ git remote rm origin
$ git remote add origin git@github.com:tyru/open-browser.vim.git  # currently volt cannot handle ssh URL

$ volt get -u tyru/dummy
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x84b49c]

goroutine 6 [running]:
github.com/vim-volt/volt/cmd.(*getCmd).installPlugin(0xc42002784c, 0xc4201a04e0, 0x15, 0xc4
2018b228, 0xc4201a4120)
        /home/tyru/.gvm/pkgsets/go1.10beta1/global/src/github.com/vim-volt/volt/cmd/get.go:
379 +0xd3c
created by github.com/vim-volt/volt/cmd.(*getCmd).getParallel
        /home/tyru/.gvm/pkgsets/go1.10beta1/global/src/github.com/vim-volt/volt/cmd/get.go:
314 +0xa6