No OCaml base compiler packages matched the version 5.2.x in the opam-repository.

The process '/opt/hostedtoolcache/opam/2.1.6/x86_64/opam' failed with exit code 20

The process '/opt/hostedtoolcache/opam/2.1.6/x86_64/opam' failed with exit code 20

The process 'D:\cygwin\wrapperbin\opam.cmd' failed with exit code 20

The process '/Users/runner/hostedtoolcache/opam/2.1.6/arm64/opam' failed with exit code 20

The process '/Users/runner/hostedtoolcache/opam/2.1.6/arm64/opam' failed with exit code 20

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

An error has been caught in some system package index files, so the system package index files have been re-synchronised, and the system package installation has been retried: the process '/opt/hostedtoolcache/opam/2.1.6/x86_64/opam' failed with exit code 20

An error has been caught in some system package index files, so the system package index files have been re-synchronised, and the system package installation has been retried: the process '/opt/hostedtoolcache/opam/2.1.6/x86_64/opam' failed with exit code 20

An error has been caught in some system package index files, so the system package index files have been re-synchronised, and the system package installation has been retried: the process 'd:\cygwin\wrapperbin\opam.cmd' failed with exit code 20

An error has been caught in some system package index files, so the system package index files have been re-synchronised, and the system package installation has been retried: the process '/users/runner/hostedtoolcache/opam/2.1.6/arm64/opam' failed with exit code 20