Ebuild 0.42 has a missing or malformed copyright/licensing header.
[Warning] Ebuild app-misc/tomboy-ng/tomboy-ng-0.42.ebuild uses 'insinto /usr/share/applications' which is deprecated. Use domenu or newmenu from desktop.eclass instead.
[Notice] Ebuild 0.42 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.
[Warning] Ebuild 0.42 uses spaces for indentation on line 16.
[Warning] Ebuild 0.42 uses spaces for indentation on line 22.
[Warning] Ebuild 0.42 uses spaces for indentation on line 24.
[Warning] Ebuild 0.42 uses spaces for indentation on line 25.
[Warning] Ebuild 0.42 uses spaces for indentation on line 26.
[Warning] Ebuild 0.42 uses spaces for indentation on line 28.
[Warning] Ebuild 0.42 uses spaces for indentation on line 29.
[Warning] Ebuild 0.42 uses spaces for indentation on line 30.
[Warning] Ebuild 0.42 has trailing whitespace on line 31.
[Warning] Ebuild 0.42 uses spaces for indentation on line 31.
[Warning] Ebuild 0.42 uses spaces for indentation on line 32.
[Warning] Ebuild 0.42 uses spaces for indentation on line 33.
[Warning] Ebuild 0.42 uses spaces for indentation on line 34.
[Warning] Ebuild 0.42 uses spaces for indentation on line 35.
[Warning] Ebuild 0.42 uses spaces for indentation on line 36.
[Warning] Ebuild 0.42 uses spaces for indentation on line 37.
[Warning] Ebuild 0.42 uses spaces for indentation on line 38.
[Warning] Ebuild 0.42 uses spaces for indentation on line 39.
[Warning] Ebuild 0.42 uses spaces for indentation on line 40.
[Warning] Ebuild 0.42 uses spaces for indentation on line 41.
[Warning] Ebuild 0.42 uses spaces for indentation on line 44.
[Warning] Ebuild 0.42 uses spaces for indentation on line 45.
[Warning] Ebuild 0.42 uses spaces for indentation on line 47.
[Warning] Ebuild 0.42 uses spaces for indentation on line 48.
[Warning] Ebuild 0.42 uses spaces for indentation on line 49.
[Warning] Ebuild 0.42 uses spaces for indentation on line 51.
[Warning] Ebuild 0.42 uses spaces for indentation on line 52.
[Warning] Ebuild 0.42 uses spaces for indentation on line 54.
[Error] Repository is missing a repo-name in metadata/layout.conf or profiles/repo_name
[Notice] Package has only unstable keywords for arch(es): [ amd64, arm, arm64, ppc, x86 ], all versions are unstable: [ 0.42 ]
[Error] Invalid or missing metadata.xml: open app-misc/tomboy-ng/metadata.xml: file does not exist