Mac BYOC install fails

[HariSekhon]

$ brew search appveyor
==> Formulae
appveyor/brew/appveyor-build-agent                                     appveyor/brew/appveyor-host-agent                                      appveyor/brew/appveyor-server

$ brew install appveyor-host-agent 
==> Installing appveyor-host-agent from appveyor/brew
==> Downloading https://appveyordownloads.blob.core.windows.net/appveyor/7.0.2546/appveyor-host-agent-7.0.2546-macos-x64.tar.gz
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curl: (33) HTTP server doesn't seem to support byte ranges. Cannot resume.
Error: An exception occurred within a child process:
  DownloadError: Failed to download resource "appveyor-host-agent"
Download failed: https://appveyordownloads.blob.core.windows.net/appveyor/7.0.2546/appveyor-host-agent-7.0.2546-macos-x64.tar.gz