[Warning] Ebuild 9999 uses a deprecated EAPI '6'. Consider upgrading to a newer EAPI.
[Notice] Ebuild 9999 has an invalid header. It should start with a valid copyright line (e.g., '# Copyright YEARS MAIN-CONTRIBUTOR') and the GPLv2 distribution text followed by an empty line.
[Error] Repository is missing a repo-name in metadata/layout.conf or profiles/repo_name
[Error] Invalid or missing metadata.xml: open dev-libs/libbrotli/metadata.xml: file does not exist