[MacPorts] #71725: ack @3.8.1 does not extract on macOS 10.11.6, it's OK on buildbots

[MacPorts]

#71725: ack @3.8.1 does not extract on macOS 10.11.6,  it's OK on buildbots
-----------------------+---------------------
 Reporter:  snowflake  |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.10.99
 Keywords:             |       Port:  ack
-----------------------+---------------------
 It seems that the system tar is not up to the job.

 Here's the log for the extract phase.

 {{{
 Executing:  cd
 "/opt/local/var/macports/build/_Users_davidevans_macports_sources_github
 .com_macports_macports-ports_devel_ack/ack/work" && /usr/bin/gzip -dc
 '/opt/local/var/macports/distfiles/perl5/ack-v3.8.1.tar.gz' | /usr/bin/tar
 -xf -
 DEBUG: system:  cd
 "/opt/local/var/macports/build/_Users_davidevans_macports_sources_github
 .com_macports_macports-ports_devel_ack/ack/work" && /usr/bin/gzip -dc
 '/opt/local/var/macports/distfiles/perl5/ack-v3.8.1.tar.gz' | /usr/bin/tar
 -xf -
 tar: Ignoring malformed pax extended attribute
 ...
 tar: Error exit delayed from previous errors.
 Command failed:  cd
 "/opt/local/var/macports/build/_Users_davidevans_macports_sources_github
 .com_macports_macports-ports_devel_ack/ack/work" && /usr/bin/gzip -dc
 '/opt/local/var/macports/distfiles/perl5/ack-v3.8.1.tar.gz' | /usr/bin/tar
 -xf -
 Exit code: 1
 Error: Failed to extract ack: command execution failed
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/71725>
MacPorts <https://www.macports.org/>
Ports system for macOS