➜ antic-api php -d memory_limit=-1 /usr/local/bin/composer require upyun/sdk
Using version ^3.5 for upyun/sdk
./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
- Can only install one of: guzzlehttp/guzzle[6.5.x-dev, 7.0.1].
- Can only install one of: guzzlehttp/guzzle[7.0.1, 6.5.x-dev].
- Can only install one of: guzzlehttp/guzzle[6.5.x-dev, 7.0.1].
- upyun/sdk 3.5.0 requires guzzlehttp/guzzle ~6.0 -> satisfiable by guzzlehttp/guzzle[6.5.x-dev].
- Installation request for upyun/sdk ^3.5 -> satisfiable by upyun/sdk[3.5.0].
- Installation request for guzzlehttp/guzzle (locked at 7.0.1, required as ^7.0.1) -> satisfiable by guzzlehttp/guzzle[7.0.1].

Installation failed, reverting ./composer.json to its original content.
➜ antic-api