The DEP 12 metadata file is not well formed. The document level must be a YAML mapping:
Some-Field: some-value Another-Field: another-value
Sometimes, the fields are mistakenly prefaced with a hyphen, which makes them a YAML sequence. In that case, please remove the hyphens.
For more information please consult:
The tag is present in Lintian version
That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit d219a5a. For merge requests, please use the latest version in the Lintian check debian/upstream/metadata.