memory limit error installing data migration tool 2.3.3 with Composer

[awesomecowboy]

PHP.ini file has line

memory_limit = -1

In command line(Putty) did the following

composer require magento/data-migration-tool:2.3.3
./composer.json has been updated
Loading composer repositor

Updating dependencies (including require-dev) 
Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 4096 bytes) in phar:///opt/cpanel/composer/bin/composer/src/Composer/DependencyResolver/Solver.php on line 220

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

Tried updating composer with  php composer.phar --self-update
received error

Could not open input file: composer.phar

Tried rollback

composer self-update --rollback

received
[UnexpectedValueException]
Composer rollback failed: no installation to roll back to in "/home/.composer"

Is it possible there is no composer in the magento folder? I did a search for composer.json and found it in the root magento folder which is where I'm running this command from. 

[linh_ng]

Please run this command: php -r "echo ini_get('memory_limit').PHP_EOL;" to check how many memory_limit is set

[awesomecowboy]

thank you for your help, It says 512m which is what is set in the control panel for the server(shared hosting) however the php.ini and user.ini is set to memory_limit = -1 and the error message states that over 1.6 gb is exhausted

[awesomecowboy]

I used 

COMPOSER_MEMORY_LIMIT=-1 composer require magento/data-migration-tool:2.3.3

and it completed with a number of messages. Is this expected. Did it complete successfully?

  - Installing magento/data-migration-tool (2.3.3): Downloading (100%)
Package zendframework/zend-stdlib is abandoned, you should avoid using it. Use laminas/laminas-stdlib instead.
Package zendframework/zend-mime is abandoned, you should avoid using it. Use laminas/laminas-mime instead.
Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead.
Package zendframework/zend-validator is abandoned, you should avoid using it. Use laminas/laminas-validator instead.
Package zendframework/zend-loader is abandoned, you should avoid using it. Use laminas/laminas-loader instead.
Package zendframework/zend-mail is abandoned, you should avoid using it. Use laminas/laminas-mail instead.
Package zendframework/zend-escaper is abandoned, you should avoid using it. Use laminas/laminas-escaper instead.
Package zendframework/zend-uri is abandoned, you should avoid using it. Use laminas/laminas-uri instead.
Package zendframework/zend-diactoros is abandoned, you should avoid using it. Use laminas/laminas-diactoros instead.
Package zendframework/zend-http is abandoned, you should avoid using it. Use laminas/laminas-http instead.
Package zendframework/zend-psr7bridge is abandoned, you should avoid using it. Use laminas/laminas-psr7bridge instead.
Package zendframework/zend-hydrator is abandoned, you should avoid using it. Use laminas/laminas-hydrator instead.
Package zendframework/zend-servicemanager is abandoned, you should avoid using it. Use laminas/laminas-servicemanager instead.
Package zendframework/zend-filter is abandoned, you should avoid using it. Use laminas/laminas-filter instead.
Package zendframework/zend-inputfilter is abandoned, you should avoid using it. Use laminas/laminas-inputfilter instead.
Package zendframework/zend-form is abandoned, you should avoid using it. Use laminas/laminas-form instead.
Package zendframework/zend-eventmanager is abandoned, you should avoid using it. Use laminas/laminas-eventmanager instead.
Package zendframework/zend-code is abandoned, you should avoid using it. Use laminas/laminas-code instead.
Package zendframework/zend-di is abandoned, you should avoid using it. Use laminas/laminas-di instead.
Package zendframework/zend-console is abandoned, you should avoid using it. Use laminas/laminas-console instead.
Package zendframework/zend-mvc is abandoned, you should avoid using it. Use laminas/laminas-mvc instead.
Package zendframework/zend-math is abandoned, you should avoid using it. Use laminas/laminas-math instead.
Package zendframework/zend-crypt is abandoned, you should avoid using it. Use laminas/laminas-crypt instead.
Package zendframework/zend-session is abandoned, you should avoid using it. Use laminas/laminas-session instead.
Package zendframework/zend-db is abandoned, you should avoid using it. Use laminas/laminas-db instead.
Package zendframework/zend-captcha is abandoned, you should avoid using it. Use laminas/laminas-captcha instead.
Package zendframework/zend-barcode is abandoned, you should avoid using it. Use laminas/laminas-barcode instead.
Package zendframework/zend-json is abandoned, you should avoid using it. Use laminas/laminas-json instead.
Package zendframework/zend-view is abandoned, you should avoid using it. Use laminas/laminas-view instead.
Package zendframework/zend-text is abandoned, you should avoid using it. Use laminas/laminas-text instead.
Package zendframework/zend-server is abandoned, you should avoid using it. Use laminas/laminas-server instead.
Package zendframework/zend-soap is abandoned, you should avoid using it. Use laminas/laminas-soap instead.
Package zendframework/zend-serializer is abandoned, you should avoid using it. Use laminas/laminas-serializer instead.
Package zendframework/zend-config is abandoned, you should avoid using it. Use laminas/laminas-config instead.
Package zendframework/zend-modulemanager is abandoned, you should avoid using it. Use laminas/laminas-modulemanager instead.
Package zendframework/zend-log is abandoned, you should avoid using it. Use laminas/laminas-log instead.
Package zendframework/zend-i18n is abandoned, you should avoid using it. Use laminas/laminas-i18n instead.
Package zendframework/zend-feed is abandoned, you should avoid using it. Use laminas/laminas-feed instead.
Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested.
Writing lock file
Generating autoload files

[awesomecowboy]

I completed the install with

COMPOSER_MEMORY_LIMIT=-1 composer require magento/data-migration-tool:2.3.3

I got strange messages though , does this mean it was successful?

- Installing magento/data-migration-tool (2.3.3): Downloading (100%)
Package zendframework/zend-stdlib is abandoned, you should avoid using it. Use laminas/laminas-stdlib instead.
Package zendframework/zend-mime is abandoned, you should avoid using it. Use laminas/laminas-mime instead.
Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead.
Package zendframework/zend-validator is abandoned, you should avoid using it. Use laminas/laminas-validator instead.
Package zendframework/zend-loader is abandoned, you should avoid using it. Use laminas/laminas-loader instead.
Package zendframework/zend-mail is abandoned, you should avoid using it. Use laminas/laminas-mail instead.
Package zendframework/zend-escaper is abandoned, you should avoid using it. Use laminas/laminas-escaper instead.
Package zendframework/zend-uri is abandoned, you should avoid using it. Use laminas/laminas-uri instead.
Package zendframework/zend-diactoros is abandoned, you should avoid using it. Use laminas/laminas-diactoros instead.
Package zendframework/zend-http is abandoned, you should avoid using it. Use laminas/laminas-http instead.
Package zendframework/zend-psr7bridge is abandoned, you should avoid using it. Use laminas/laminas-psr7bridge instead.
Package zendframework/zend-hydrator is abandoned, you should avoid using it. Use laminas/laminas-hydrator instead.
Package zendframework/zend-servicemanager is abandoned, you should avoid using it. Use laminas/laminas-servicemanager instead.
Package zendframework/zend-filter is abandoned, you should avoid using it. Use laminas/laminas-filter instead.
Package zendframework/zend-inputfilter is abandoned, you should avoid using it. Use laminas/laminas-inputfilter instead.
Package zendframework/zend-form is abandoned, you should avoid using it. Use laminas/laminas-form instead.
Package zendframework/zend-eventmanager is abandoned, you should avoid using it. Use laminas/laminas-eventmanager instead.
Package zendframework/zend-code is abandoned, you should avoid using it. Use laminas/laminas-code instead.
Package zendframework/zend-di is abandoned, you should avoid using it. Use laminas/laminas-di instead.
Package zendframework/zend-console is abandoned, you should avoid using it. Use laminas/laminas-console instead.
Package zendframework/zend-mvc is abandoned, you should avoid using it. Use laminas/laminas-mvc instead.
Package zendframework/zend-math is abandoned, you should avoid using it. Use laminas/laminas-math instead.
Package zendframework/zend-crypt is abandoned, you should avoid using it. Use laminas/laminas-crypt instead.
Package zendframework/zend-session is abandoned, you should avoid using it. Use laminas/laminas-session instead.
Package zendframework/zend-db is abandoned, you should avoid using it. Use laminas/laminas-db instead.
Package zendframework/zend-captcha is abandoned, you should avoid using it. Use laminas/laminas-captcha instead.
Package zendframework/zend-barcode is abandoned, you should avoid using it. Use laminas/laminas-barcode instead.
Package zendframework/zend-json is abandoned, you should avoid using it. Use laminas/laminas-json instead.
Package zendframework/zend-view is abandoned, you should avoid using it. Use laminas/laminas-view instead.
Package zendframework/zend-text is abandoned, you should avoid using it. Use laminas/laminas-text instead.
Package zendframework/zend-server is abandoned, you should avoid using it. Use laminas/laminas-server instead.
Package zendframework/zend-soap is abandoned, you should avoid using it. Use laminas/laminas-soap instead.
Package zendframework/zend-serializer is abandoned, you should avoid using it. Use laminas/laminas-serializer instead.
Package zendframework/zend-config is abandoned, you should avoid using it. Use laminas/laminas-config instead.
Package zendframework/zend-modulemanager is abandoned, you should avoid using it. Use laminas/laminas-modulemanager instead.
Package zendframework/zend-log is abandoned, you should avoid using it. Use laminas/laminas-log instead.
Package zendframework/zend-i18n is abandoned, you should avoid using it. Use laminas/laminas-i18n instead.
Package zendframework/zend-feed is abandoned, you should avoid using it. Use laminas/laminas-feed instead.
Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested.
Writing lock file
Generating autoload files