https://proxy.golang.org/github.com/dahs81/otto/@v/v0.2.1-0.20160126165905-6400716cf085.zip: HTTP error: Head "https://proxy.golang.org/github.com/dahs81/otto/@v/v0.2.1-0.20160126165905-6400716cf085.zip": read tcp [fddf:3978:feb1:d745::c001]:57520->[2607:f8b0:4001:c0f::8d]:443: read: connection reset by peer