/usr/lib/perl5/YAML/LibYAML.pm is in libyaml-libyaml-perl 0.41-5ubuntu0.14.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | package YAML::LibYAML;
use 5.008003;
use strict;
use warnings;
our $VERSION = '0.18';
die "YAML::LibYAML has been renamed to YAML::XS. Please use YAML::XS instead.";
1;
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