Dear Sir/Madam,

Several of our developers complained that they can't git push their changes with error unpacker error and Updates were rejected because a pushed branch tip is behind its remote counterpart.

Following is the screen capture. Could you please let know how to fix this probelm and what caused it? Due to the git push error, they can't work on the development now.

Thanks for your help!

$ git fetch

$ git pull
Already up-to-date.

$ git push

warning: push.default is unset; its implicit value is changing in
Git 2.0 from 'matching' to 'simple'. To squelch this message
and maintain the current behavior after the default changes, use:

git config --global push.default matching

To squelch this message and adopt the new behavior now, use:
git config --global push.default simple

When push.default is set to 'matching', git will push local branches
to the remote branches that already exist with the same name.

In Git 2.0, Git will default to the more conservative 'simple'
behavior, which only pushes the current branch to the corresponding
remote branch that 'git pull' uses to update the current branch.

See 'git help config' and search for 'push.default' for further information.
(the 'simple' mode was introduced in Git 1.7.11. Use the similar mode
'current' instead of 'simple' if you sometimes use older versions of Git)

Counting objects: 242, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (57/57), done.
Writing objects: 100% (61/61), 5.87 KiB | 0 bytes/s, done.
Total 61 (delta 39), reused 0 (delta 0)

**remote: error: insufficient permission for adding an object to repository database objects

remote: fatal: failed to write object

error: unpack failed: unpack-objects abnormal exit

To git@bitbucket.org:straighterline/magento.git

! [rejected] feature/SL-2666 -> feature/SL-2666 (non-fast-forward)

! [remote rejected] feature/SL-3180 -> feature/SL-3180 (unpacker error)

! [remote rejected] feature/SL-3288 -> feature/SL-3288 (unpacker error)

! [rejected] master -> master (non-fast-forward)

error: failed to push some refs to 'git@bitbucket.org:straighterline/magento.git'**

hint: Updates were rejected because a pushed branch tip is behind its remote

hint: counterpart. If you did not intend to push that branch, you may want to

hint: specify branches to push or set the 'push.default' configuration variable

hint: to 'simple', 'current' or 'upstream' to push only the current branch.