$ python3 Scripts/build.py debug
Building scheme GitX (debug), please wait…
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:x86_64, id:814000F5-DD10-5CC1-8C15-8F62969B6571 }
{ platform:macOS, name:Any Mac }
** BUILD FAILED **


The following build commands failed:
	Ld /Users/stephen/dev/macos/gitx/build/Debug/ObjectiveGit.framework/Versions/A/ObjectiveGit normal (in target 'ObjectiveGit-Mac' from project 'ObjectiveGitFramework')
(1 failure)
Traceback (most recent call last):
  File "/Users/stephen/dev/macos/gitx/Scripts/helpers.py", line 50, in xcodebuild
    output = check_string_output(cmd)
  File "/Users/stephen/dev/macos/gitx/Scripts/helpers.py", line 22, in check_string_output
    return subprocess.check_output(command).decode('utf-8').strip()
  File "/usr/local/Cellar/python@3.9/3.9.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 424, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/local/Cellar/python@3.9/3.9.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 528, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['xcrun', 'xcodebuild', '-workspace', 'GitX.xcworkspace', '-scheme', 'GitX', '-configuration', 'Debug', 'build', 'BUILD_DIR=/Users/stephen/dev/macos/gitx/build']' returned non-zero exit status 65.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/stephen/dev/macos/gitx/Scripts/build.py", line 40, in <module>
    args.func(args)
  File "/Users/stephen/dev/macos/gitx/Scripts/build.py", line 31, in build_cmd
    build(project)
  File "/Users/stephen/dev/macos/gitx/Scripts/build.py", line 14, in build
    helpers.xcodebuild(project.scheme(), project.workspace(), project.current_build_config(), ["build"], project.build_base_dir())
  File "/Users/stephen/dev/macos/gitx/Scripts/helpers.py", line 53, in xcodebuild
    raise BuildError(str(e))
helpers.BuildError: Command '['xcrun', 'xcodebuild', '-workspace', 'GitX.xcworkspace', '-scheme', 'GitX', '-configuration', 'Debug', 'build', 'BUILD_DIR=/Users/stephen/dev/macos/gitx/build']' returned non-zero exit status 65.