我已添加＆＃34; ornicar / apc-bundle＆＃34;：＆＃34; 1.0。*＆＃34;到我的composer.json安装它，但我收到了这个错误：
composer.phar update ornicar/apc-bundle
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Can only install one of: nelmio/alice[1.5.0, 1.6.x-dev].
- Can only install one of: nelmio/alice[1.5.1, 1.6.x-dev].
- Can only install one of: nelmio/alice[1.5.2, 1.6.x-dev].
- Installation request for nelmio/alice == 1.6.9999999.9999999-dev -> satisfiable by nelmio/alice[1.6.x-dev].
- Installation request for nelmio/alice 1.5.*@dev -> satisfiable by nelmio/alice[1.5.0, 1.5.1, 1.5.2].
有什么想法吗？