It looks like you are trying to install Julia 1.6 or 1.7 on the "macos-latest" runners. "macos-latest" now resolves to "macos-14", which run on Apple Silicon (aarch64) macOS machines. Unfortunately, Julia 1.6 and 1.7 do not have native binaries available for Apple Silicon macOS. Therefore, it is not possible to install Julia with the current constraints. For instructions on how to fix this error, please see the following Discourse post: https://discourse.julialang.org/t/how-to-fix-github-actions-ci-failures-with-julia-1-6-or-1-7-on-macos-latest-and-macos-14/117019

Encountered error: Could not find aarch64/1.6.7 binaries

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

Canceling since a higher priority waiting request for 'CI-refs/pull/1900/merge' exists

[setup-julia] If you are testing 1.6 as a Long Term Support (lts) version, consider using the new "lts" version specifier instead of "1.6" explicitly, which will automatically resolve the current lts.

[setup-julia] If you are testing 1.6 as a Long Term Support (lts) version, consider using the new "lts" version specifier instead of "1.6" explicitly, which will automatically resolve the current lts.