I have gotten this too, multiple times, on both Azure Pipelines and Appveyor.  The latter is worse since required.  There was also a Mac failure for Azure, not sure is same issue.

Please disable this test.  External resource problems should not be blocking merges of good patches.  This is especially obnoxious for backports because it is not possible to rerun by close and reopen, as closing causes the backport branch to be deleted.