Finally, i got it.

https://launchpadlibrarian.net/71622307/buildlog_ubuntu-natty-amd64.qemu-kvm_0.14.0%2Bspicev35-0ubuntu1_BUILDING.txt.gz

Log is clean

https://launchpadlibrarian.net/71622306/buildlog_ubuntu-natty-i386.qemu-kvm_0.14.0%2Bspicev35-0ubuntu1_BUILDING.txt.gz

qemu-common_0.14.0+spicev35-0ubuntu1_all.deb has nothing to do with "-Werror"

chroot-autobuild/build/buildd/qemu-common_0.14.0+spicev35-0ubuntu1_all.deb:
drwxr-xr-x root/root         0 2011-05-13 09:45 ./
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/share/
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/share/apport/
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/share/apport/package-hooks/
-rw-r--r-- root/root       350 2011-05-13 09:15 ./usr/share/apport/package-hooks/source_qemu-kvm.py
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/share/qemu/
-rwxr-xr-x root/root      1024 2011-05-13 09:44 ./usr/share/qemu/multiboot.bin
drwxr-xr-x root/root         0 2011-05-13 09:14 ./usr/share/qemu/keymaps/
-rw-r--r-- root/root      2587 2011-05-13 09:14 ./usr/share/qemu/keymaps/fr
-rw-r--r-- root/root      2576 2011-05-13 09:14 ./usr/share/qemu/keymaps/no
-rw-r--r-- root/root      1354 2011-05-13 09:14 ./usr/share/qemu/keymaps/pt-br
-rw-r--r-- root/root      2699 2011-05-13 09:14 ./usr/share/qemu/keymaps/hr
-rw-r--r-- root/root       934 2011-05-13 09:14 ./usr/share/qemu/keymaps/fr-ca
-rw-r--r-- root/root     11421 2011-05-13 09:14 ./usr/share/qemu/keymaps/bepo
-rw-r--r-- root/root      1866 2011-05-13 09:14 ./usr/share/qemu/keymaps/hu
-rw-r--r-- root/root      2672 2011-05-13 09:14 ./usr/share/qemu/keymaps/pl
-rw-r--r-- root/root      3064 2011-05-13 09:14 ./usr/share/qemu/keymaps/is
-rw-r--r-- root/root      1105 2011-05-13 09:14 ./usr/share/qemu/keymaps/nl
-rw-r--r-- root/root      3123 2011-05-13 09:14 ./usr/share/qemu/keymaps/th
-rw-r--r-- root/root       609 2011-05-13 09:14 ./usr/share/qemu/keymaps/en-us
-rw-r--r-- root/root      2735 2011-05-13 09:14 ./usr/share/qemu/keymaps/fr-be
-rw-r--r-- root/root      2649 2011-05-13 09:14 ./usr/share/qemu/keymaps/tr
-rw-r--r-- root/root      1096 2011-05-13 09:14 ./usr/share/qemu/keymaps/lt
-rw-r--r-- root/root       906 2011-05-13 09:14 ./usr/share/qemu/keymaps/fo
-rw-r--r-- root/root       293 2011-05-13 09:14 ./usr/share/qemu/keymaps/modifiers
-rw-r--r-- root/root      2450 2011-05-13 09:14 ./usr/share/qemu/keymaps/pt
-rw-r--r-- root/root      2462 2011-05-13 09:14 ./usr/share/qemu/keymaps/it
-rw-r--r-- root/root      2366 2011-05-13 09:14 ./usr/share/qemu/keymaps/mk
-rw-r--r-- root/root      2293 2011-05-13 09:14 ./usr/share/qemu/keymaps/sl
-rw-r--r-- root/root      1115 2011-05-13 09:14 ./usr/share/qemu/keymaps/et
-rw-r--r-- root/root        43 2011-05-13 09:14 ./usr/share/qemu/keymaps/nl-be
-rw-r--r-- root/root      2467 2011-05-13 09:14 ./usr/share/qemu/keymaps/de
-rw-r--r-- root/root      1008 2011-05-13 09:14 ./usr/share/qemu/keymaps/sv
-rw-r--r-- root/root      2581 2011-05-13 09:14 ./usr/share/qemu/keymaps/en-gb
-rw-r--r-- root/root      2239 2011-05-13 09:14 ./usr/share/qemu/keymaps/ar
-rw-r--r-- root/root      2576 2011-05-13 09:14 ./usr/share/qemu/keymaps/da
-rw-r--r-- root/root      2236 2011-05-13 09:14 ./usr/share/qemu/keymaps/es
-rw-r--r-- root/root      2685 2011-05-13 09:14 ./usr/share/qemu/keymaps/fi
-rw-r--r-- root/root      2554 2011-05-13 09:14 ./usr/share/qemu/keymaps/ru
-rw-r--r-- root/root      2140 2011-05-13 09:14 ./usr/share/qemu/keymaps/ja
-rw-r--r-- root/root      2077 2011-05-13 09:14 ./usr/share/qemu/keymaps/common
-rw-r--r-- root/root      2840 2011-05-13 09:14 ./usr/share/qemu/keymaps/lv
-rw-r--r-- root/root      2471 2011-05-13 09:14 ./usr/share/qemu/keymaps/fr-ch
-rw-r--r-- root/root      2533 2011-05-13 09:14 ./usr/share/qemu/keymaps/de-ch
-rwxr-xr-x root/root      1024 2011-05-13 09:45 ./usr/share/qemu/linuxboot.bin
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/share/doc/
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/share/doc/qemu-common/
-rw-r--r-- root/root     15720 2011-05-13 09:20 ./usr/share/doc/qemu-common/changelog.Debian.gz
-rw-r--r-- root/root      4079 2011-05-13 09:15 ./usr/share/doc/qemu-common/copyright
drwxr-xr-x root/root         0 2011-05-13 09:45 ./usr/bin/
-rwxr-xr-x root/root       270 2011-05-13 09:15 ./usr/bin/qemu-ifdown
-rwxr-xr-x root/root       138 2011-05-13 09:15 ./usr/bin/qemu-ifup
drwxr-xr-x root/root         0 2011-05-13 09:45 ./etc/
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./usr/share/qemu/vgabios.bin -> ../vgabios/vgabios.bin
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./usr/share/qemu/vgabios-qxl.bin -> ../vgabios/vgabios.qxl.bin
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./usr/share/qemu/vgabios-vmware.bin -> ../vgabios/vgabios.vmware.bin
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./usr/share/qemu/vgabios-stdvga.bin -> ../vgabios/vgabios.stdvga.bin
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./usr/share/qemu/vgabios-cirrus.bin -> ../vgabios/vgabios.cirrus.bin
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./usr/share/qemu/bios.bin -> ../seabios/bios.bin
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./etc/qemu-ifdown -> /usr/bin/qemu-ifdown
lrwxrwxrwx root/root         0 2011-05-13 09:45 ./etc/qemu-ifup -> /usr/bin/qemu-ifup