Description of problem:
After successfully installed Mail in php app ( via adding Mail in deplist.txt and git push),
made another change and git push, will met:
remote: Building PHP cartridge
remote: Checking pear: Mail
remote: 
remote: PHP Notice:  unserialize(): Error at offset 7700 of 12711 bytes in /usr/share/pear/PEAR/Registry.php on line 1145
remote: PHP Stack trace:
remote: PHP   1. {main}() /usr/share/pear/pearcmd.php:0
remote: PHP   2. PEAR_Command_Common->run() /usr/share/pear/pearcmd.php:305
remote: PHP   3. PEAR_Command_Registry->doList() /usr/share/pear/PEAR/Command/Common.php:271
remote: PHP   4. PEAR_Command_Registry->doFileList() /usr/share/pear/PEAR/Command/Registry.php:146
remote: PHP   5. PEAR_Registry->getPackage() /usr/share/pear/PEAR/Command/Registry.php:278
remote: PHP   6. PEAR_Registry->_getPackage() /usr/share/pear/PEAR/Registry.php:1962
remote: PHP   7. PEAR_Registry->_packageInfo() /usr/share/pear/PEAR/Registry.php:1443
remote: PHP   8. unserialize() /usr/share/pear/PEAR/Registry.php:1145
remote: PHP Warning:  Invalid argument supplied for foreach() in /usr/share/pear/PEAR/Command/Registry.php on line 304
......

Version-Release number of selected component (if applicable):
devenv_4038
rhc 1.17.5

How reproducible:
always

Steps to Reproduce:
1.Create an php app.
2.Git clone the repo to local.
3.Add Mail in deplist.txt and git push the change.
4.Made another change and git push.

Actual results:
Step 4 failed with error as in description.

Expected results:
Git push successfully.

Additional info: