Test::Builder object is a singleton

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examples/test-perl/t/builder.t

use strict;
use warnings;

use Test::More tests => 1;
use Test::Builder;
use Test::Builder::Module;

my $TMb = Test::More->builder;
diag $TMb;

my $TBM = Test::Builder::Module->builder;
diag $TBM;

my $TBn = Test::Builder->new;
diag $TBn;

ok 1;

perl examples/test-perl/t/builder.t

1..1
# Test::Builder=HASH(0x7ff234044ab8)
# Test::Builder=HASH(0x7ff234044ab8)
# Test::Builder=HASH(0x7ff234044ab8)
ok 1