W upstream-metadata-yaml-invalid

All reports of upstream-metadata-yaml-invalid for the archive. The extended description of this tag is:

The DEP 12 metadata file is not well formed. The formatting need to be adjusted to match the YAML specification.

Refer to https://dep-team.pages.debian.net/deps/dep12/ for details.

Severity: normal, Certainty: certain

Check: upstream-metadata, Type: source

Emitted (non-overridden): 4, overridden: 0, total: 4

The package names link to the relevant maintainer page and the corresponding report for the source package. The links go to the full maintainer report page, which includes info and experimental tags and overridden tags, rather than the default page that shows only errors and warnings.

libbusiness-edi-perl 0.05-2 (source) (Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>)

• mapping values are not allowed in this context (at document 1, line 2, column 11)

pkwalify 1.22.99~git3d3f0ea-1 (source) (Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>)

• mapping values are not allowed in this context (at document 1, line 2, column 11)

python-expyriment 0.7.0+git34-g55a4e7e-3.3 (source) (Oliver Lindemann <oliver.lindemann@uni-potsdam.de>)

• mapping values are not allowed in this context (at document 1, line 3, column 21)

r-cran-propclust 1.4-6-1 (source) (Debian R Packages Maintainers <r-pkg-team@alioth-lists.debian.net>)

• found a tab character where an indentation space is expected (at document 1, line 4, column 1)