What version of Go are you using (go version)?

$ go version
1.11.1

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\AppData\Local\go-build
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=C:\go
set GOPROXY=
set GORACE=
set GOROOT=C:\Go
set GOTMPDIR=
set GOTOOLDIR=C:\Go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\AppData\Local\Temp\go-build643855302=/tmp/go-build -gno-record-gcc-switches

$ go env

What did you do? go get github.com/go-gota/gota/dataframe

and go get github.com/sjwhitworth/golearn/trees

###Everytime, i try to install a package from Github i get the error as mentioned in title. Irrespective of which package it is, almost all packages i'm trying to get from Github are giving this error.