[perl #126998] Use of Proc with IO::Pipe is counter-intuitive

[via RT]

# New Ticket Created by  Vytautas D 
# Please include the string:  [perl #126998]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=126998 >


Following script throws error ( "Aborted (core dumped)" ) when $id ==
1007. This is because $p.err is really never closed. however, what I
find intriguing is if I remove "my $output = $p.err.slurp-rest;" line
it works fine. None the less, error message should be improved.

use v6;

my $id = 0;
recursion();

sub recursion()
{
    say ++$id;

    my $p = run('false', :out, :err );
    my $output = $p.err.slurp-rest;

    try {
        $p.out.close;
        $p.err.close;
        CATCH { default {} }
    }

    if ($id < 1010) {
        recursion();
    }
}

$ perl6 --version
This is Rakudo version 2015.11-708-g76c447b built on MoarVM version
2015.11-113-gbd56e2e implementing Perl 6.b.