alaska@alaska-VirtualBox:~/tpcc/tpcc-course-2019/tasks/2-condvar/semaphore$ tpcc commit
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Good evening, alaska!

Command running: ['commit'], cwd: /home/alaska/tpcc/tpcc-course-2019/tasks/2-condvar/semaphore
Platform: Linux-4.18.0-16-generic-x86_64-with-Ubuntu-18.04-bionic
C++ compiler: /usr/bin/clang++-6.0 (clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final))
Python: 3.6.7, CPython, /home/alaska/tpcc/tpcc-course-2019/client/venv/bin/python
Repository root directory: /home/alaska/tpcc/tpcc-course-2019
Git current commit: 546ad61428a15e937db7779f8abdb12d341ad002

Checking ['semaphore.hpp', 'channel.hpp'] with clang-tidy (/usr/bin/clang-tidy)
12440 warnings generated.
26171 warnings generated.
Applying clang-format (/usr/bin/clang-format) to ['semaphore.hpp', 'channel.hpp']

Moving to repo /home/alaska/tpcc/798-anna-isaeva-u-alaska666
Running git: ['checkout', 'master']
Уже на «master»
Ваша ветка обновлена в соответствии с «origin/master».
Switching to task branch '2-condvar/semaphore'
Running git: ['checkout', '2-condvar/semaphore']
error: object file .git/objects/46/e1f8b512f9e6dc16607f1e42a7044321f58ccf is empty
error: object file .git/objects/46/e1f8b512f9e6dc16607f1e42a7044321f58ccf is empty
fatal: loose object 46e1f8b512f9e6dc16607f1e42a7044321f58ccf (stored in .git/objects/46/e1f8b512f9e6dc16607f1e42a7044321f58ccf) is corrupt
Running git: ['checkout', '-b', '2-condvar/semaphore']
fatal: Ветка с именем «2-condvar/semaphore» уже существует.

Command '['git', 'checkout', '-b', '2-condvar/semaphore']' returned non-zero exit status 128.
Traceback (most recent call last):
  File "/home/alaska/tpcc/tpcc-course-2019/client/tpcc/solutions.py", line 167, in _switch_to_or_create_branch
    self._git(["checkout", branch], cwd=self.repo_dir)
  File "/home/alaska/tpcc/tpcc-course-2019/client/tpcc/solutions.py", line 151, in _git
    subprocess.check_call(["git"] + cmd, **kwargs)
  File "/usr/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['git', 'checkout', '2-condvar/semaphore']' returned non-zero exit status 128.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/alaska/tpcc/tpcc-course-2019/client/client.py", line 324, in main
    args.cmd(args)
  File "/home/alaska/tpcc/tpcc-course-2019/client/client.py", line 179, in commit_command
    client.commit(current_task, message=args.message, bump=args.bump)
  File "/home/alaska/tpcc/tpcc-course-2019/client/tpcc/course.py", line 302, in commit
    self.solutions.commit(task, message, bump)
  File "/home/alaska/tpcc/tpcc-course-2019/client/tpcc/solutions.py", line 193, in commit
    self._switch_to_or_create_branch(task_branch)
  File "/home/alaska/tpcc/tpcc-course-2019/client/tpcc/solutions.py", line 169, in _switch_to_or_create_branch
    self._git(["checkout", "-b", branch], cwd=self.repo_dir)
  File "/home/alaska/tpcc/tpcc-course-2019/client/tpcc/solutions.py", line 151, in _git
    subprocess.check_call(["git"] + cmd, **kwargs)
  File "/usr/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['git', 'checkout', '-b', '2-condvar/semaphore']' returned non-zero exit status 128.