Composer conflict, check it

[anboo]

$ composer req instasent/resque-bundle

Using version ^0.2.4 for instasent/resque-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for instasent/resque-bundle ^0.2.4 -> satisfiable by instasent/resque-bundle[v0.2.4].
- instasent/resque-bundle v0.2.4 requires chrisboulton/php-resque dev-master -> satisfiable by chrisboulton/php-resque[dev-master] but these conflict with your requirements or minimum-stability.

Installation failed, reverting ./composer.json to its original content.

$ composer show chrisboulton/*

chrisboulton/php-resque 1.2 Redis backed library for creating background jobs and processi...
chrisboulton/php-resque-scheduler 1.1 php-resque-scheduler is a PHP port of resque-scheduler, which ...

$ composer show symfony/*

symfony/monolog-bundle v3.1.0 Symfony MonologBundle
symfony/phpunit-bridge v3.2.8 Symfony PHPUnit Bridge
symfony/polyfill-apcu v1.3.0 Symfony polyfill backporting apcu_* functions to lower PHP versions
symfony/polyfill-intl-icu v1.3.0 Symfony polyfill for intl's ICU-related data and classes
symfony/polyfill-mbstring v1.3.0 Symfony polyfill for the Mbstring extension
symfony/polyfill-php56 v1.3.0 Symfony polyfill backporting some PHP 5.6+ features to lower PHP v...
symfony/polyfill-php70 v1.3.0 Symfony polyfill backporting some PHP 7.0+ features to lower PHP v...
symfony/polyfill-util v1.3.0 Symfony utilities for portability of PHP codes
symfony/security-acl v3.0.0 Symfony Security Component - ACL (Access Control List)
symfony/swiftmailer-bundle v2.5.4 Symfony SwiftmailerBundle
symfony/symfony v3.2.8 The Symfony PHP framework