Current version do not support job feature

[Gabirel]

This is because your version of vim is lower than vim(v7.4.1325).
You have to upgrade your vim to higher version with +job feature.

vim with +job(Higher Version):

vim with -job(Lower Version):

Thanks @unixcx

[wsdjeg]

+job | vim: +v7.4.1325

[Gabirel]

Oh, that's so accurate~