https://proxy.golang.org/github.com/hartzell/terraform/@v/v0.8.6-0.20180503104400-0cc9e050ecd4.zip: https://proxy.golang.org/github.com/hartzell/terraform/@v/v0.8.6-0.20180503104400-0cc9e050ecd4.zip: 429 Too Many Requests