Error downloading keys

[isaacma4]

Log stacktrace:

Jun 13 18:23:34 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:34Z" level=info msg="Downloading package builder-worker for target x86_64-linux"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=info msg="Uploading package core/builder-worker/6159/20171107005814 to channel stable"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=error msg="✗✗✗"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=error msg="✗✗✗ Failed to read origin key, /hab/cache/keys/core-20160612031944.pub, No such file or directory (os error 2)"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=error msg="✗✗✗"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=info msg="» Promoting core/builder-worker/6159/20171107005814 to channel 'stable'"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=info msg="Failed to promote 'core/builder-worker/6159/20171107005814': APIError(NotFound, \"\")"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=error msg="✗✗✗"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=error msg="✗✗✗ [404 Not Found]"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=error msg="✗✗✗"
Jun 13 18:23:36 ip-10-90-1-64.ec2.internal hab[14021]: bldr_package_sync.default(O): time="2019-06-13T18:23:36Z" level=info msg="Cleaning up downloaded files"

[skylerto]

Package exists in builder's API: https://bldr.habitat.sh/v1/depot/pkgs/core/builder-worker/6159/20171107005814

But doesn't seem to be reachable from the UI:

But we can directly reach it:

https://bldr.habitat.sh/#/pkgs/core/builder-worker