Undefined subroutine &Data::Dump::dump line 1949

[Hans Schou]

Hi

I sometimes get this error:
Undefined subroutine &Data::Dump::dump called at
/usr/local/bin/parallel line 1949, <GEN0> line 1.
And sometimes I get it two times in a run.

$ parallel --version
GNU parallel 20111209
(it is the git trunk version)

Command:
parallel --tag -j+0 -S .. --nonall --timeout=10 'grep -r
^register_globals /etc/php*'

If I then run the command 5 seconds later there is no error.

/hans