Test::LeakTraceを使うテストに Test::Valgrindを使うとエラーになる

error.log

% prove --exec 'perl -Iblib/lib -Iblib/arch -MTest::Valgrind' leak.t

# Using valgrind 3.7.0 located at /usr/local/bin/valgrind
# Using suppression file /Users/syohei/.perl/Test-Valgrind/suppressions/1.13/memcheck-3.7.0-aa5062912afa3d247a5c755d0683818d.supp

#   Failed test 'Leak_StillReachable'
#   at /Users/syohei/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/darwin-2level/Test/Valgrind/Session.pm line 451.
#          got: 1
#     expected: 0
# 
#   100 bytes in 1 blocks are still reachable in loss record 14 of 23
#     realloc (/usr/local/lib/valgrind/vgpreload_memcheck-amd64-darwin.so) [vg_replace_malloc.c:525]
#     Perl_safesysrealloc (/Users/syohei/perl5/perlbrew/perls/perl-5.14.1/bin/perl) [?:?]
#     set_stateinfo (/Users/syohei/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/darwin-2level/auto/Test/LeakTrace/LeakTrace.bundle) [?:?]
#     leaktrace_runops (/Users/syohei/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/darwin-2level/auto/Test/LeakTrace/LeakTrace.bundle) [?:?]
#     perl_run (/Users/syohei/perl5/perlbrew/perls/perl-5.14.1/bin/perl) [?:?]
#     main (/Users/syohei/perl5/perlbrew/perls/perl-5.14.1/bin/perl) [?:?]
# Looks like you failed 1 test of 15.
# Looks like your test exited with 1 just after 15.
leak.t .. 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/15 subtests 

Test Summary Report
-------------------
leak.t (Wstat: 256 Tests: 15 Failed: 1)
  Failed test:  15
  Non-zero exit status: 1
Files=1, Tests=15,  8 wallclock secs ( 0.03 usr  0.01 sys +  7.13 cusr  0.21 csys =  7.38 CPU)
Result: FAIL

leak.t

#!perl
use strict;
use warnings;

use Test::LeakTrace;

leaktrace {
    1;
};