[baron@localhost stabilize-test-suite]$ perl t/pt-online-schema-change/alter_active_table.t 
1..9
# Loading sample dataset...
# Binlog position before altering table: mysql-bin.000001/3686358
not ok 1 - Altered OK
#   Failed test 'Altered OK'
#   in t/pt-online-schema-change/alter_active_table.t at line 184.
#                   'Error copying rows from `pt_osc`.`t` to `pt_osc`.`_t_new`: DBD::mysql::st execute failed: Table 'pt_osc._t_new' doesn't exist [for Statement "INSERT LOW_PRIORITY IGNORE INTO `pt_osc`.`_t_new` (`id`, `c`, `d`) SELECT `id`, `c`, `d` FROM `pt_osc`.`t` FORCE INDEX(`PRIMARY`) WHERE ((`id` >= ?)) AND ((`id` <= ?)) /*pt-online-schema-change 19490 copy nibble*/" with ParamValues: 1='515', 0='504'] at /home/baron/stabilize-test-suite//bin/pt-online-schema-change line 6734.
# 
# '
#     doesn't match '(?-xism:Successfully altered `pt_osc`.`t`)'
not ok 2 - New table ENGINE=InnoDB
#   Failed test 'New table ENGINE=InnoDB'
#   in t/pt-online-schema-change/alter_active_table.t at line 187.
#          got: 'MyISAM'
#     expected: 'InnoDB'
$VAR1 = {
  t => {
    auto_increment => '541',
    avg_row_length => '40',
    check_time => undef,
    checksum => undef,
    collation => 'latin1_swedish_ci',
    comment => '',
    create_options => '',
    create_time => '2012-06-06 16:26:10',
    data_free => '0',
    data_length => '20600',
    engine => 'MyISAM',
    index_length => '17408',
    max_data_length => '11258999068426239',
    name => 't',
    row_format => 'Fixed',
    rows => '515',
    update_time => '2012-06-06 16:26:19',
    version => '10'
  }
};
ok 3 - Dropped old table
not ok 4 - Exit status 0
#   Failed test 'Exit status 0'
#   in t/pt-online-schema-change/alter_active_table.t at line 199.
#          got: undef
#     expected: '0'
ok 5 - New table row count: 500 original + 24 inserted - 9 deleted
ok 6 - No extra rows inserted in new table
ok 7 - No deleted rows present in new table
ok 8 - Updated rows correct in new table
ok 9 - Sandbox servers
# Looks like you failed 3 tests of 9.