File exists: 'builds' on build

[Matt Jones]

When building the basic hello package, like so:
sudo ./packagetastic build distro:=ubuntu package:=hello $UID

I sometimes get this error:
Building hello ...
Uncompressing source code ...
Traceback (most recent call last):
  File "./packagetastic", line 65, in <module>
    lib_packagetastic.build(distro_name, package_name)
  File "/home/matt/Projects/packagetastic2/lib_packagetastic.py", line 849, in build
    builder.build(meta, packages)
  File "distros/ubuntu.py", line 79, in build
    setup_source_code(meta)
  File "/home/matt/Projects/packagetastic2/lib_packagetastic.py", line 483, in setup_source_code
    os.mkdir("builds")
OSError: [Errno 17] File exists: 'builds'

[Matt Jones (workhorsy)]

The problem was that the script, could not remove all the files with normal user permissions.