me@mycomp ~//ns-3-dev $ ./waf build
Waf: Entering directory `/home/me/ns-3-dev/build'
Traceback (most recent call last):
  File "./waf", line 154, in <module>
    Scripting.prepare(t, cwd, VERSION, wafdir)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Scripting.py", line 105, in prepare
    prepare_impl(t,cwd,ver,wafdir)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Scripting.py", line 98, in prepare_impl
    main()
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Scripting.py", line 133, in main
    fun(ctx)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Scripting.py", line 277, in build
    return build_impl(bld)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Scripting.py", line 286, in build_impl
    bld.add_subdirs([os.path.split(Utils.g_module.root_path)[0]])
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Build.py", line 614, in add_subdirs
    self.recurse(dirs,'build')
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Utils.py", line 441, in recurse
    f(self)
  File "<string>", line 557, in build
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Build.py", line 614, in add_subdirs
    self.recurse(dirs,'build')
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Utils.py", line 441, in recurse
    f(self)
  File "<string>", line 121, in build
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Build.py", line 614, in add_subdirs
    self.recurse(dirs,'build')
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Utils.py", line 437, in recurse
    self.pre_recurse(f,base,nexdir)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Build.py", line 619, in pre_recurse
    self.path=self.root.find_dir(nexdir)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Node.py", line 140, in find_dir
    self.__class__.bld.rescan(current)
  File "/home/me/ns-3-dev/.waf-1.5.13-4340ef810f7db5d61c618fdf96cb5695/wafadmin/Build.py", line 322, in rescan
    if node.id in dct:
TypeError: argument of type 'int' is not iterable