Clean-up script to delete old pr- environments not working

[jloubet]

I'm running a terminus command in order to remove the pr's multidev that has closed pull requests.

When running:
terminus -n build:env:delete:pr <TERMINUS_SITE> --yes

I get:

 [notice] Rsync pr-5.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx@appserver.pr-5.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.drush.in:code/build-metadata.json => /tmp/build-metadata.json
 [notice] Rsync pr-8.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx@appserver.pr-8.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.drush.in:code/build-metadata.json => /tmp/build-metadata.json
 [notice] Rsync pr-9.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx@appserver.pr-9.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.drush.in:code/build-metadata.json => /tmp/build-metadata.json
 [notice] No environments have build metadata.

I checked the multidevs and all of them has the file code/build-metadata.json:
{"url":"","ref":"pr-10","sha":"xxxxxxxxxxxxx","comment":"CI: Merge pull request #9 from xxx-xxx/xxx-xxx","commit-date":"2021-05-04 15:44:56 -0700","build-date":"2021-05-05 20:21:31 +0000"}

Thanks,

[jloubet]

I was able to fix the issue by adding a GITHUB_TOKEN. It looks CI isn't reporting issues on connecting to GitHub API.