It seems that Ubuntu broke their vagrant boxes. After I was having problems I’ve come to find out I’m not the only one. Posting here to save others the hassle. Seems to be an issue selecting boxes from old builds as well.
https://bugs.launchpad.net/cloud-images/+bug/1862837
https://bugs.launchpad.net/cloud-images/+bug/1862700
The box failed to unpackage properly. Please verify that the box file you're trying to add is not corrupted and that enough disk space is available and then try again. The output from attempting to unpackage (if any): x box.ovf x Vagrantfile x metadata.json x ubuntu-bionic-18.04-cloudimg.mf x ubuntu-bionic-18.04-cloudimg.vmdk: Truncated tar archive bsdtar: Error exit delayed from previous errors.
submitted by /u/hughra
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