The Homebrew package manager has had to move it’s package repository from bintray to GitHub packages. Anyone using a 10.15 runner (i.e.
macos-latest ) with the default settings will be getting a version of homebrew that is apparently not updated to use the new download location (Homebrew 3.0.10 looks like). In the actions output the error is not very informative about what’s going on, users will just see
curl: (22) The requested URL returned error: 502 Bad Gateway . The URL itself just gives
See a more complete discussion here: Bintray shuts down · Discussion #691 · Homebrew/discussions · GitHub.