Suspected link extor fail on older Perls

[plicease]

The fetch should warn if it fails, so I think it is having trouble extracting the links from the HTML.
http://www.cpantesters.org/cpan/report/0ebc1ef4-00f5-11e9-afbf-aec3b07506ca
http://www.cpantesters.org/cpan/report/5eadb9dc-00f4-11e9-afbf-aec3b07506ca
http://www.cpantesters.org/cpan/report/9ca6a5c4-00f3-11e9-afbf-aec3b07506ca

# 
#                      perl 5.008009
#    Acme::Alien::DontPanic undefined
#       Acme::Ford::Prefect undefined
#  Acme::Ford::Prefect::FFI undefined
#              Alien::Build 1.49
#          Archive::Extract 0.80
#              Archive::Tar 2.04
#             Capture::Tiny 0.30
#                File::Spec 3.74
#                File::Temp 0.22
#               File::chdir 0.1010
#           HTML::LinkExtor 3.69
#                HTTP::Tiny 0.056
#                    Inline undefined
#                 Inline::C undefined
#               Inline::CPP undefined
#            LWP::UserAgent 6.35
#             Module::Build 0.4216
#                  Net::FTP 2.77
#   Shell::Config::Generate 0.33
#              Shell::Guess 0.09
#            Sort::Versions 1.62
#                Test2::API 1.302136
#                 Test2::V0 0.000117
#          Text::ParseWords 3.27
#                       URI 1.69
#                    parent 0.234
t/00_diag.t .................................. ok
t/alien_base_modulebuild_cabinet.t ........... ok
t/alien_base_modulebuild_file.t .............. ok
t/alien_base_modulebuild_repository.t ........ ok
Variable "$bin" will not stay shared at (eval 181) line 15.
t/alien_base_modulebuild_repository_ftp.t .... ok
        # Failed test at t/alien_base_modulebuild_repository_http.t line 104.
        # +------+------------------+---------------------+
        # | PATH | GOT              | CHECK               |
        # +------+------------------+---------------------+
        # | [0]  | <DOES NOT EXIST> | relativepackage.txt |
        # +------+------------------+---------------------+
    # Failed test 'LWP::UserAgent'
    # at t/alien_base_modulebuild_repository_http.t line 105.

# Failed test 'list_files()'
# at t/alien_base_modulebuild_repository_http.t line 106.
t/alien_base_modulebuild_repository_http.t ... 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/9 subtests 
t/alien_base_modulebuild_repository_local.t .. ok
t/alien_base_modulebuild.t ................... ok
t/inline.t ................................... skipped: Module 'Inline' is not installed
t/alien_base_modulebuild_utils.t ............. ok
t/inline_cpp.t ............................... skipped: Module 'Inline' is not installed

Test Summary Report
-------------------
t/alien_base_modulebuild_repository_http.t (Wstat: 256 Tests: 9 Failed: 1)
  Failed test:  4
  Non-zero exit status: 1
Files=11, Tests=58,  2 wallclock secs ( 0.08 usr  0.03 sys +  2.79 cusr  0.56 csys =  3.46 CPU)
Result: FAIL
Failed 1/11 test programs. 1/58 subtests failed.