Composer: Advertencias sobre la eliminación del proveedor y luego la instalación del compositor

Cuando elimine el proveedor / (para limpiar), la instalación del compositor fallará porque no verifica este caso extremo.

benny@benny-desktop:~/code/php/wsnetbeans/DoctrineBundle(master)$ composer install
Installing from lock file
PHP Notice:  Undefined index: hash in phar:///home/benny/code/php/composer.phar/src/Composer/Package/Locker.php on line 2
PHP Stack trace:
PHP   1. {main}() /home/benny/code/php/composer.phar:0
PHP   2. require() /home/benny/code/php/composer.phar:15
PHP   3. Composer\Console\Application->run() phar:///home/benny/code/php/composer.phar/bin/composer:14
PHP   4. Symfony\Component\Console\Application->run() phar:///home/benny/code/php/composer.phar/src/Composer/Console/Application.php:2
PHP   5. Composer\Console\Application->doRun() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:2
PHP   6. Symfony\Component\Console\Application->doRun() phar:///home/benny/code/php/composer.phar/src/Composer/Console/Application.php:2
PHP   7. Symfony\Component\Console\Command\Command->run() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:2
PHP   8. Composer\Command\InstallCommand->execute() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Command/Command.php:2
PHP   9. Composer\Command\InstallCommand->install() phar:///home/benny/code/php/composer.phar/src/Composer/Command/InstallCommand.php:10
PHP  10. Composer\Package\Locker->isFresh() phar:///home/benny/code/php/composer.phar/src/Composer/Command/InstallCommand.php:10
Your lock file is out of sync with your composer.json, run "composer.phar update" to update dependencies
PHP Notice:  Undefined index: packages in phar:///home/benny/code/php/composer.phar/src/Composer/Package/Locker.php on line 2
PHP Stack trace:
PHP   1. {main}() /home/benny/code/php/composer.phar:0
PHP   2. require() /home/benny/code/php/composer.phar:15
PHP   3. Composer\Console\Application->run() phar:///home/benny/code/php/composer.phar/bin/composer:14
PHP   4. Symfony\Component\Console\Application->run() phar:///home/benny/code/php/composer.phar/src/Composer/Console/Application.php:2
PHP   5. Composer\Console\Application->doRun() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:2
PHP   6. Symfony\Component\Console\Application->doRun() phar:///home/benny/code/php/composer.phar/src/Composer/Console/Application.php:2
PHP   7. Symfony\Component\Console\Command\Command->run() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:2
PHP   8. Composer\Command\InstallCommand->execute() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Command/Command.php:2
PHP   9. Composer\Command\InstallCommand->install() phar:///home/benny/code/php/composer.phar/src/Composer/Command/InstallCommand.php:10
PHP  10. Composer\Package\Locker->getLockedPackages() phar:///home/benny/code/php/composer.phar/src/Composer/Command/InstallCommand.php:10
PHP Warning:  Invalid argument supplied for foreach() in phar:///home/benny/code/php/composer.phar/src/Composer/Package/Locker.php on line 2
PHP Stack trace:
PHP   1. {main}() /home/benny/code/php/composer.phar:0
PHP   2. require() /home/benny/code/php/composer.phar:15
PHP   3. Composer\Console\Application->run() phar:///home/benny/code/php/composer.phar/bin/composer:14
PHP   4. Symfony\Component\Console\Application->run() phar:///home/benny/code/php/composer.phar/src/Composer/Console/Application.php:2
PHP   5. Composer\Console\Application->doRun() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:2
PHP   6. Symfony\Component\Console\Application->doRun() phar:///home/benny/code/php/composer.phar/src/Composer/Console/Application.php:2
PHP   7. Symfony\Component\Console\Command\Command->run() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php:2
PHP   8. Composer\Command\InstallCommand->execute() phar:///home/benny/code/php/composer.phar/vendor/symfony/console/Symfony/Component/Console/Command/Command.php:2
PHP   9. Composer\Command\InstallCommand->install() phar:///home/benny/code/php/composer.phar/src/Composer/Command/InstallCommand.php:10
PHP  10. Composer\Package\Locker->getLockedPackages() phar:///home/benny/code/php/composer.phar/src/Composer/Command/InstallCommand.php:10