Failed to download zendframework/zend-stdlib from dist

Problem

# php composer.phar install

Loading composer repositories with package information

Installing dependencies (including require-dev) from lock file

  - Removing zendframework/zend-stdlib (2.5.1)

  - Installing zendframework/zend-stdlib (2.2.3)

    Downloading: Connecting...    Failed to download zendframework/zend-stdlib from dist: The "https://api.github.com/repos/zendframework/Component_ZendStdlib/zipball/7c87ce4e840957596bf3401fa4ae4fb0355682e2" file could not be downloaded (HTTP/1.1 404 Not Found)

    Now trying to download from source

  - Installing zendframework/zend-stdlib (2.2.3)

    Cloning 7c87ce4e840957596bf3401fa4ae4fb0355682e2

                                                                                                                   

  [RuntimeException]                                                                                               

  Failed to clone git@github.com:zendframework/Component_ZendStdlib.git via git, https, ssh protocols, aborting.   

  - git://github.com/zendframework/Component_ZendStdlib.git                                                        

    error: The requested URL returned error: 403 Forbidden while accessing https://github.com/zendframework/Compo  

  nent_ZendStdlib.git/info/refs  

Steps to solve:

1.  Verify the connection to github

# ssh -T git@github.com  Permission denied (publickey).

2. Verify that ssh agent is running

# eval "$(ssh-agent -s)"  

Agent pid 100 

3. Verify that the key is loaded into the ssh agent

# ssh-add -l

The agent has no identities.

# ssh-add   

Identity added: /home/{user}/.ssh/id_rsa (/home/{user}/.ssh/id_rsa) 

4. Set-up github's credentials for local computer

# git config --global user.name "{githubuser}"

then copy the local key from  /home/{user}/.ssh/id_rssa.pub into {githubuser}'s account (Settings->SSH keys->Add SSH key)

then verify it:

# ssh -T git@github.com

Hi {githubuser}! You've successfully authenticated, but GitHub does not provide shell access.

5. Run composer update for the specific version you want

# php composer.phar require zendframework/zend-stdlib 2.2.3