Update: I was able to reproduce the behaviour with the latest release.
address@hidden /tmp/T $ mkdir -p ~/Taddress@hidden /tmp/T $ mkdir -p /tmp/Taddress@hidden /tmp/T $ cd /tmp/Taddress@hidden /tmp/T $ ~/bin/parallel -S 127.0.0.1 --return {1} --cleanup echo {1} '>' {1} ::: A Baddress@hidden /tmp/T $ ls /tmp/TA Baddress@hidden /tmp/T $ ls ~/Taddress@hidden /tmp/T $ rm -rf /tmp/T/*address@hidden /tmp/T $ rm -rf ~/T/*address@hidden /tmp/T $ ~/bin/parallel --header : -S 127.0.0.1 --return {G} --cleanup echo {G} '>' {G} ::: G A Brsync: link_stat "/home/marco/{G}" failed: No such file or directory (2)rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1655) [generator=3.1.0]rsync: link_stat "/home/marco/{G}" failed: No such file or directory (2)rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1655) [generator=3.1.0]address@hidden /tmp/T $ ls /tmp/Taddress@hidden /tmp/T $ ls ~/Taddress@hidden /tmp/T $ rm -rf /tmp/T/*address@hidden /tmp/T $ rm -rf ~/T/*address@hidden /tmp/T $ ~/bin/parallel --versionGNU parallel 20150822Copyright (C) 2007,2008,2009,2010,2011,2012,2013,2014,2015 Ole Tangeand Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is free software: you are free to change and redistribute it.GNU parallel comes with no warranty.Web site: http://www.gnu.org/software/parallelWhen using programs that use GNU Parallel to process data for publicationplease cite as described in 'parallel --bibtex'.address@hidden /tmp/T $