Bisecting just via speculative CI uploads is pretty horrible.
I threw an upstream 6.10 (December 2019 branch) tarball at a PPA, and it built, and previously had the same failures with a 6.6 tarball (August 2019 branch). So somewhere in that range, the issues with Focal were fixed.
Am still working on improving the CI story upstream with IBM, but that's not going to happen in time.
Bisecting just via speculative CI uploads is pretty horrible.
I threw an upstream 6.10 (December 2019 branch) tarball at a PPA, and it built, and previously had the same failures with a 6.6 tarball (August 2019 branch). So somewhere in that range, the issues with Focal were fixed.
Am still working on improving the CI story upstream with IBM, but that's not going to happen in time.