Now I see, there is -newpages parameter.

But when bot found page which was created on different name and moved to new, crashes

Seems duplicate to bug 65309?

pwb.py newitem.py -lang:nl -newpages

Page age is set to 21 days so only pages created
before 2014-10-01T18:33:46 will be considered.
Last edit is set to 7 days so only pages last edited
before 2014-10-15T18:33:49 will be considered.
Retrieving 50 pages from wikipedia:nl.

Aanvangsstabiliteit <<<

Traceback (most recent call last):

File "C:\pywikibot\coredev\pwb.py", line 164, in <module>
  run_python_file(fn, argv, argvu)
File "C:\pywikibot\coredev\pwb.py", line 69, in run_python_file
  exec(compile(source, filename, "exec"), main_mod.__dict__)
File "C:\pywikibot\coredev\scripts\newitem.py", line 141, in <module>
  main()
File "C:\pywikibot\coredev\scripts\newitem.py", line 138, in main
  bot.run()
File "C:\pywikibot\coredev\scripts\newitem.py", line 68, in run
  item = pywikibot.ItemPage.fromPage(page)
File "C:\pywikibot\coredev\pywikibot\page.py", line 3156, in fromPage
  raise pywikibot.NoPage(i)

pywikibot.exceptions.NoPage: Page [[wikidata:-1]] doesn't exist.
<class 'pywikibot.exceptions.NoPage'>
CRITICAL: Waiting for 1 network thread(s) to finish. Press ctrl-c to abort

Nice, -newpages works, but looks like the bot is completely broken

Nevermind, ran the wrong version:

python2.7 pwb.py newitem.py -lang:nl -newpages

Page age is set to 21 days so only pages created
before 2014-10-01T18:13:15 will be considered.
Last edit is set to 7 days so only pages last edited
before 2014-10-15T18:13:16 will be considered.
Retrieving 50 pages from wikipedia:nl.
Working on u'Aanvangsstabiliteit'
Last edit on [[nl:Aanvangsstabiliteit]] was on 2014-10-22T17:34:46.
Too recent. Skipping.
[[nl:Abbas Bahri]] already has an item: [[wikidata:Q305866]].
[[nl:Abdij Mariawald]] already has an item: [[wikidata:Q334026]].
[[nl:Anything Goes (1936)]] already has an item: [[wikidata:Q2743992]].
Working on u'Audiotricz'
Last edit on [[nl:Audiotricz]] was on 2014-10-22T17:46:47.
Too recent. Skipping.
[[nl:Batrachedra]] already has an item: [[wikidata:Q146795]].
[[nl:Goodall]] already has an item: [[wikidata:Q418363]].
(etc etc etc)