Check https://getcomposer.org/doc/articles/troubleshooting.md#memory-limit-errors for more info on how to handle out of memory errors.

Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 83886080 bytes) in phar:///usr/local/bin/composer/src/Composer/DependencyResolver/RuleSet.php on line 90

Check https://getcomposer.org/doc/articles/troubleshooting.md#memory-limit-errors for more info on how to handle out of memory errors.

PHP のメモリーが少ないためのエラー

composer の場合、COMPOSER_MEMORY_LIMIT を先頭につけることで回避可能。

`COMPOSER_MEMORY_LIMIT=-1 composer require auth0/auth0-php`