I cannot reproduce this.
- Bug#1036263: guestfs-tools: FTBFS in testing: make[6]... Lucas Nussbaum
- Bug#1036263: guestfs-tools: FTBFS in testing: ma... Bastian Germann
- Bug#1036263: guestfs-tools: FTBFS in testing... Martin Hostettler
- Bug#1036263: guestfs-tools: FTBFS in tes... Salvatore Bonaccorso
- Bug#1036263: Package can be built just fine Hilko Bengen