Bug report

latest 0.12.33

Warning: var_export does not handle circular references in
phar:///home/travis/build/.../vendor/phpstan/phpstan/p
hpstan/src/Cache/FileCacheStorage.php on line 70

Travis CI reports
php --version

PHP 7.4.2 (cli) (built: Jan 24 2020 13:44:53) ( ZTS )