I just installed version REL1_30-a380ea2 on MW 1.30 and activated it using wfLoadExtension( 'TimeMachine' ); but it crashes the wiki returning:
PHP Fatal error: Uncaught exception 'Exception' with message '/var/www/genderation.xyz/mediawiki-1.30.0/extensions/TimeMachine/extension.json does not exist!' in /var/www/genderation.xyz/mediawiki-1.30.0/includes/registration/ExtensionRegistry.php:99\nStack trace:\n#0 /var/www/genderation.xyz/mediawiki-1.30.0/includes/GlobalFunctions.php(120): ExtensionRegistry->queue('/var/www/gender...')\n#1 /var/www/genderation.xyz/Extensions.conf(138): wfLoadExtension('TimeMachine')\n#2 /var/www/genderation.xyz/LocalSettings.php(193): require_once('/var/www/gender...')\n#3 /var/www/genderation.xyz/mediawiki-1.30.0/includes/WebStart.php(102): require_once('/var/www/gender...')\n#4 /var/www/genderation.xyz/mediawiki-1.30.0/index.php(40): require('/var/www/gender...')\n#5 {main}\n thrown in /var/www/genderation.xyz/mediawiki-1.30.0/includes/registration/ExtensionRegistry.php on line 99
The file extension.json exists in REL1_31-d81fcc4, however. i used that file and it worked.