Traceback (most recent call last):
  File ".bootstrap/_pex/pex.py", line 315, in execute
  File ".bootstrap/_pex/pex.py", line 250, in _wrap_coverage
  File ".bootstrap/_pex/pex.py", line 282, in _wrap_profiling
  File ".bootstrap/_pex/pex.py", line 358, in _execute
  File ".bootstrap/_pex/pex.py", line 416, in execute_entry
  File ".bootstrap/_pex/pex.py", line 421, in execute_module
  File "/usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 180, in run_module
    fname, loader, pkg_name)
  File "/usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "migrate_config.py", line 615, in <module>
  File "migrate_config.py", line 595, in check_config_file
  File "pants/option/custom_types.py", line 28, in list_option
  File "pants/option/custom_types.py", line 52, in _convert
  File "pants/util/eval.py", line 47, in parse_literal
  File "/usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 49, in literal_eval
    node_or_string = parse(node_or_string, mode='eval')
  File "/usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 37, in parse
    return compile(source, filename, mode, PyCF_ONLY_AST)
  File "<unknown>", line 2
    "/Users/pl/code/pants/.local_artifact_cache/,
                                                ^
SyntaxError: EOL while scanning string literal