rake release breaks with github problem

Actually i'm trying to run rake release inside RubyMine as Rake Task.

If i'm doing this manual from the command line with "rake release" it asks me for username and password. Then it finished with a success.

If i'm running it inside RubyMine i'm getting:

rake aborted!
Couldn't git push. `git push  2>&1' failed with the following output:

fatal: could not read Username for 'https://github.com': No such device or address

Maybe anyone has fixed such before?

Greetings Sascha