There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.

header_is_parsed, is_complete

Always returns true - as flat-file results do not have a special header section, not a footer to determine completeness.

parse_header

No-op stub.

parse_line

Returns the line given, checking that it does not contain a report of an error.