bug?.p6

#!/usr/bin/env perl6

sub get-output() {
    my $proc = Proc::Async.new: ‘echo’, ‘test’;
    react {
        #whenever $proc.stdout { } # ←↙ these work
        #whenever $proc.stderr { } #
        whenever $proc { }         # ← this doesn't
        whenever $proc.start { }
    }
    say $++;
}

loop { get-output }