Ebuild 1.0 has a missing or malformed copyright/licensing header.
[Notice] Ebuild 1.0 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.
[Notice] Package has only unstable keywords for arch(es): [ amd64 ], all versions are unstable: [ 1.0 ]
[Warning] Missing md5-cache for ebuild steam-nofile-1.0