The problem exists for me as of May 3, 2020:
https://travis-ci.com/github/dcknox/speech_dev/jobs/327031606
Can anyone tell me what the core issue is here? I would think that using a versioned osx image (instead the “latest” image) in Travis would effectively freeze Travis to not pick up any update to texlive or whatever underlying software is causing the issue. If not, this would seem to beat the whole point of using Travis as a reproducible environment.