PDOException: SQLSTATE[42000]: Syntax error or access violation...

A fresh install on -dev drupal and drush (master).

The following extensions will be enabled: bot, bot_drupal_api, bot_seen, bot_auth, bot_karma, bot_tell
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WD php: PDOException: SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes: CREATE  [error]
TABLE {bot_drupal_api} (
`name` VARCHAR(255) NOT NULL DEFAULT '' COMMENT 'The function name.', 
`signature` VARCHAR(600) NULL DEFAULT '' COMMENT 'The function signature.', 
`summary` TEXT NULL DEFAULT NULL COMMENT 'The function summary.', 
`label` VARCHAR(255) NOT NULL COMMENT 'A label that identifies which dump this function is from.', 
`url` VARCHAR(255) NOT NULL DEFAULT '' COMMENT 'The URL where more information about the function can be found.', 
INDEX `bot_drupal_api_label_name` (`label`, `name`)
) ENGINE = InnoDB DEFAULT CHARACTER SET utf8 COMMENT 'Stores function data retrieved from Drupal api.module...'; Array
(
)
 in db_create_table() (line 2685 of includes/database/database.inc).
Cannot modify header information - headers already sent by (output started at includes/output.inc:37) bootstrap.inc:1239            [warning]
PDOException: SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes: CREATE TABLE {bot_drupal_api} (
`name` VARCHAR(255) NOT NULL DEFAULT '' COMMENT 'The function name.', 
`signature` VARCHAR(600) NULL DEFAULT '' COMMENT 'The function signature.', 
`summary` TEXT NULL DEFAULT NULL COMMENT 'The function summary.', 
`label` VARCHAR(255) NOT NULL COMMENT 'A label that identifies which dump this function is from.', 
`url` VARCHAR(255) NOT NULL DEFAULT '' COMMENT 'The URL where more information about the function can be found.', 
INDEX `bot_drupal_api_label_name` (`label`, `name`)
) ENGINE = InnoDB DEFAULT CHARACTER SET utf8 COMMENT 'Stores function data retrieved from Drupal api.module...'; Array
(
)
 in db_create_table() (line 2685 of includes/database/database.inc).
Drush command terminated abnormally due to an unrecoverable error.