backout problem

$ # Following http://mercurial.selenic.com/wiki/Backout

$ hg init borepo

$ cd borepo

$ echo line1 > file.txt
$ echo line2 >> file.txt
$ hg ci -Am "add file"
adding file.txt

$ gedit file.txt
$ cat file.txt
line1
line1a
line2

$ hg ci -m "add line1a"

$ echo line3 >> file.txt
$ hg ci -m "add line3"

$ echo line4 >> file.txt
$ hg ci -m "add line4"

$ hg glog
@  changeset:   3:43b920f7b1dd
|  tag:         tip
|  user:        Marcin Kasperski
|  date:        Thu Nov 07 13:23:54 2013 +0100
|  summary:     add line4
|
o  changeset:   2:8d9a97440528
|  user:        Marcin Kasperski
|  date:        Thu Nov 07 13:23:46 2013 +0100
|  summary:     add line3
|
o  changeset:   1:9157048d1fc3
|  user:        Marcin Kasperski
|  date:        Thu Nov 07 13:23:39 2013 +0100
|  summary:     add line1a
|
o  changeset:   0:1f61d86880ab
   user:        Marcin Kasperski
   date:        Thu Nov 07 13:23:10 2013 +0100
   summary:     add file

$ hg backout -r 1
reverting file.txt
merging file.txt
0 files updated, 1 files merged, 0 files removed, 0 files unresolved

$ hg glog
@  changeset:   3:43b920f7b1dd
|  tag:         tip
|  user:        Marcin Kasperski
|  date:        Thu Nov 07 13:23:54 2013 +0100
|  summary:     add line4
|
o  changeset:   2:8d9a97440528
|  user:        Marcin Kasperski
|  date:        Thu Nov 07 13:23:46 2013 +0100
|  summary:     add line3
|
o  changeset:   1:9157048d1fc3
|  user:        Marcin Kasperski
|  date:        Thu Nov 07 13:23:39 2013 +0100
|  summary:     add line1a
|
o  changeset:   0:1f61d86880ab
   user:        Marcin Kasperski
   date:        Thu Nov 07 13:23:10 2013 +0100
   summary:     add file

$ hg stat
M file.txt

$ hg version
Mercurial Distributed SCM (version 2.7.2)
(see http://mercurial.selenic.com for more information)

Copyright (C) 2005-2013 Matt Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.