Synthesis failed for bigtable

[yoshi-automation]

Hello! Autosynth couldn't regenerate bigtable. 💔

Here's the output from running synth.py:

Cloning into 'working_repo'...
Switched to branch 'autosynth-bigtable'
�[35msynthtool > �[31m�[43mYou are running the synthesis script directly, this will be disabled in a future release of Synthtool. Please use python3 -m synthtool instead.�[0m
�[35msynthtool > �[36mEnsuring dependencies.�[0m
�[35msynthtool > �[36mPulling artman image.�[0m
latest: Pulling from googleapis/artman
Digest: sha256:2f6b261ee7fe1aedf238991c93a20b3820de37a343d0cacf3e3e9555c2aaf2ea
Status: Image is up to date for googleapis/artman:latest
�[35msynthtool > �[36mCloning googleapis.�[0m
�[35msynthtool > �[36mRunning generator for google/bigtable/artman_bigtable.yaml.�[0m
�[35msynthtool > �[32mGenerated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/java.�[0m
�[35msynthtool > �[36mCleaned up 1 temporary directories.�[0m

Changed files:

On branch autosynth-bigtable
nothing to commit, working tree clean
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.1/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.1/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/git/autosynth/autosynth/synth.py", line 166, in <module>
    main()
  File "/tmpfs/src/git/autosynth/autosynth/synth.py", line 151, in main
    commit_changes(pr_title)
  File "/tmpfs/src/git/autosynth/autosynth/synth.py", line 95, in commit_changes
    subprocess.check_call(["git", "commit", "-m", message])
  File "/home/kbuilder/.pyenv/versions/3.6.1/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['git', 'commit', '-m', 'Regenerate bigtable client']' returned non-zero exit status 1.

Google internal developers can see the full log here.