Package were built, but unable to publish

I’m maintaining i2pd package on snapcraft.
Today was release and I went to package builds page and found that something (maybe snapcraft itself) tried to build packages. They were successfully built, but failed to release.
Then I pushed new version to snap and awaited for build results. It build them successfully but same error returned at end, that failed to publish.
Example build id: #1298513.
What happens?

The log is not available. :frowning: