I get the below while trying a go get
[cloud_user@12c src]$ go get github.com/haccer/subjack
../github.com/haccer/subjack/subjack/requests.go:5:2: no Go files in /home/cloud_user/go/src/github.com/valyala/fasthttp

So I tried doing a go get github.com/valyala/fasthttp and then if it runs successfully, wanted to run the above command but it gives
[cloud_user@12c src]$ go get github.com/valyala/fasthttp
can't load package: package github.com/valyala/fasthttp: no Go files in /home/cloud_user/go/src/github.com/valyala/fasthttp

Can someone help with this ?