Hi

The package git-crypt is broken like @hobarrera reported you in the
comments.
Even if you recently updated the package (last update is 2015-06-13) the
package remains broken.
On 2015-06-09 hobarrera asked us to orphan this package but no real
fixes were made to address the broken issue. You still have 3 days to
fix this package, after that we'll accept the orphan request.
If you want to keep this package please update it and fix it or the
package ownership will go to hobarrera.

Regards

--
Fabio Castelli aka Muflone