build.py passes invalid arguments to subprocess.Popen about conda-build HOT 9 CLOSED

> conda skeleton pypi watchdog
Using url https://pypi.python.org/packages/source/w/watchdog/watchdog-0.8.0.tar.gz (152770) for watchdog.
Downloading watchdog (use --no-download to skip this step)
Unpacking watchdog...
done
working in c:\users\matthe~1\appdata\local\temp\tmphybgnbconda_skeleton_watchdog
Fetching package metadata: ....
Solving package specifications: .
The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    python-2.7.8               |                0        17.1 MB

The following packages will be UN-linked:

    package                    |            build
    ---------------------------|-----------------
    python-2.7.7               |                2

The following packages will be linked:

    package                    |            build
    ---------------------------|-----------------
    python-2.7.8               |                0   hard-link
    pyyaml-3.11                |           py27_0   hard-link

Fetching packages ...
python-2.7.8-0 100% |###############################| Time: 0:00:27 659.82 kB/s
Extracting packages ...
[      COMPLETE      ] |#################################################| 100%
Unlinking packages ...
[      COMPLETE      ] |#################################################| 100%
Linking packages ...
[      COMPLETE      ] |#################################################| 100%
Applying patch: u'c:\\users\\matthe~1\\appdata\\local\\temp\\tmphybgnbconda_skeleton_watchdog\\pypi-distutils.patch'
patching file core.py
Hunk #1 succeeded at 169 with fuzz 2 (offset 2 lines).
Traceback (most recent call last):
  File "C:\Anaconda\Scripts\conda-skeleton-script.py", line 4, in <module>
    sys.exit(main())
  File "C:\Anaconda\lib\site-packages\conda_build\main_skeleton.py", line 124, in main
    args.func(args, p)
  File "C:\Anaconda\lib\site-packages\conda_build\main_skeleton.py", line 135, in execute
    pypi.main(args, parser)
  File "C:\Anaconda\lib\site-packages\conda_build\pypi.py", line 313, in main
    run_setuppy(src_dir, tempdir, args)
  File "C:\Anaconda\lib\site-packages\conda_build\pypi.py", line 491, in run_setuppy
    subprocess.check_call(args, env=env)
  File "C:\Anaconda\lib\subprocess.py", line 535, in check_call
    retcode = call(*popenargs, **kwargs)
  File "C:\Anaconda\lib\subprocess.py", line 522, in call
    return Popen(*popenargs, **kwargs).wait()
  File "C:\Anaconda\lib\subprocess.py", line 709, in __init__
    errread, errwrite)
  File "C:\Anaconda\lib\subprocess.py", line 957, in _execute_child
    startupinfo)
TypeError: environment can only contain strings

> conda info
Current conda install:

             platform : win-64
        conda version : 3.5.5
       python version : 2.7.6.final.0
     root environment : C:\Anaconda  (writable)
  default environment : C:\Anaconda
     envs directories : C:\Anaconda\envs
        package cache : C:\Anaconda\pkgs
         channel URLs : http://repo.continuum.io/pkgs/free/win-64/
                        http://repo.continuum.io/pkgs/pro/win-64/
          config file : C:\Users\matthewtopper\.condarc
    is foreign system : False