Can't create MIGRATION_LOG_TABLE due to Index column size too large

[YujiShen]

I try to use --log-in-db option in migration, but when run the migration, I got the error:

ERROR: SQLSTATE[HY000]: General error: 1709 Index column size too large. The maximum column size is 767 bytes.

I think it is because I use utf8mb4 for my database. Maybe reduce the version column size? Now it is 255. And it will exceed max limit for indexing.

phalcon-devtools/scripts/Phalcon/Migrations.php

Line 447 in b62a35e

new Index('idx_' . self::MIGRATION_LOG_TABLE . '_version', ['version'])

Here is a related question on SO: How to fix MySql: index column size too large (Laravel migrate)

Environment:
OS: Linux de4c926a06e4 4.9.60-linuxkit-aufs #1 SMP Mon Nov 6 16:00:12 UTC 2017 x86_64
PHP Version: 7.1.9
PHP SAPI: cli
PHP Bin: /usr/bin/php7
PHP Extension Dir: /usr/lib/php7/modules
PHP Bin Dir: /usr/bin
Loaded PHP config: /etc/php7/php.ini
Versions:
Phalcon DevTools Version: 3.2.8
Phalcon Version: 3.3.1
AdminLTE Version: 2.3.6

[sergeysviridenko]

@YujiShen Could you please provide a bit more information to correct reproduce?

[YujiShen]

I think the key to reproduce this is to set your Character Set of database to utf8mb4. Then try to generate the migration.

[sergeysviridenko]

@YujiShen which version do you have? like 1.0.0? with 1.0.0 works fine.

[YujiShen]

@sergeysviridenko Have you tried timestamp?

[sergeysviridenko]

@YujiShen nope. Could you provide all steps to reproduce?