Description of problem:
wycliff:~# dnf history
ID     | Command line             | Date and time    | Action(s)      | Altered
-------------------------------------------------------------------------------
    19 | update                   | 2014-04-08 10:51 | Update         |    2   
    18 | update                   | 2014-04-07 15:57 | Update         |    4   
    17 | install x86_64/wdiff-1.2 | 2014-04-07 02:05 | Install        |    1   
    16 | install noarch/vim-vimou | 2014-04-07 00:11 | Install        |    1   
    15 | upgrade                  | 2014-04-06 14:58 | Update         |    1 E<
    14 | install http://download. | 2014-04-04 14:34 | Install        |    1 ><
    13 | upgrade                  | 2014-04-04 02:21 | Update         |   36 ><
    12 | remove evolution-bogofil | 2014-04-03 16:57 | Erase          |    1 > 
    11 | update evolution-3.8.5-2 | 2014-04-03 14:04 | I, U           |   12   
    10 | update                   | 2014-04-02 21:25 | Update         |   12   
     9 | install python-apsw-3.7. | 2014-04-02 15:10 | Install        |    1   
     8 | install fbreader-0.12.10 | 2014-04-02 14:40 | Install        |    4   
     7 | install x86_64/liblinebr | 2014-04-02 14:34 | Install        |    3   
     6 | update                   | 2014-04-02 12:34 | E, I, U        |   91 EE
     5 | upgrade evolution-data-s | 2014-04-01 20:34 | I, U           |    3   
     4 | install noarch/winpdb-1. | 2014-04-01 00:55 | Install        |    1   
     3 | install wxPython-devel   | 2014-04-01 00:55 | Install        |    2   
     2 | update                   | 2014-03-31 08:27 | Update         |    7   
     1 | update                   | 2014-03-29 15:20 | Update         |    4   
wycliff:~# dnf history info 19
Transaction ID : 19
Begin time     : Tue Apr  8 10:51:25 2014
Begin rpmdb    : 3460:3745b265eecd5bdd131c2bbb0cc5c911cb46d72d
End time       :            10:51:31 2014 (6 seconds)
End rpmdb      : 3460:02f3aaf0c756b217bae18bbc4d9b3387e6d58d16 **
User           : Matěj Cepl <matej>
Return-Code    : Success
Command Line   : update
Traceback (most recent call last):
  File "/bin/dnf", line 35, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 242, in user_main
    errcode = main(args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 75, in main
    return _main(base, args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 124, in _main
    cli.run()
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 1378, in run
    return self.command.run(self.base.extcmds)
  File "/usr/lib/python2.7/site-packages/dnf/cli/commands/__init__.py", line 2280, in run
    ret = self.output.historyInfoCmd(extcmds)
  File "/usr/lib/python2.7/site-packages/dnf/cli/output.py", line 1810, in historyInfoCmd
    self._historyInfoCmd(tid, pats)
  File "/usr/lib/python2.7/site-packages/dnf/cli/output.py", line 1931, in _historyInfoCmd
    if not isinstance(old.tid):
TypeError: isinstance expected 2 arguments, got 1
wycliff:~# 


Version-Release number of selected component (if applicable):
dnf-0.4.19-2.el7.noarch
python-hawkey-0.4.12-2.el7.x86_64
libsolv-0.4.1-1.gitbcedc98.el7.x86_64
librepo-1.7.1-1.el7.x86_64

How reproducible:
100% (well, happened twice)

Steps to Reproduce:
1.see above
2.
3.

Actual results:
crash

Expected results:
provided information

Additional info:
There is a significant delay between printing out the information printed out and crash (half-minute or so).