[a4e2341c] Running /usr/bin/env [ ! -d ~/.rbenv/versions/2.1.0 ] on xxx.xxx.xxx
[a4e2341c] Command: [ ! -d ~/.rbenv/versions/2.1.0 ]
[a4e2341c] Finished in 6.761 seconds with exit status 1 (failed).

这个什么意思？是说目录不存在吗？但是这个目录是存在的，

Running ~/.rbenv/bin/rbenv exec bundle exec rake tmp:cache:clear on www.neonan.com
Command: cd /home/ben/staging/releases/20140305160352 && ( RBENV_ROOT=~/.rbenv RBENV_VERSION=2.1.0 ~/.rbenv/bin/rbenv exec bundle exec rake tmp:cache:clear )

fatal: Not a git repository (or any parent up to mount point /home)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

这个什么情况？