Error message: parallel: This should not happen. You have found a bug.
* The version number: 20200722
* The bugid: col8 does not contain host: 0
* The command line being run: parallel -S2/testuser@localhost --filter-hosts ls ::: ~
Passing case: parallel -S2/testuser@localhost ls ::: ~
Platform: Linux myhost 2.6.16.60-0.85.1-smp #1 SMP Thu Mar 17 11:45:06 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Thanks for your help,
Sergi