https://proxy.golang.org/github.com/adrian-bl/terraform/@v/v0.7.0-rc2.0.20160705220747-de0a34fc3517.zip: https://proxy.golang.org/github.com/adrian-bl/terraform/@v/v0.7.0-rc2.0.20160705220747-de0a34fc3517.zip: 429 Too Many Requests