The Factory build of 32-bit virtualbox 5.0.10 fails as follows:

[ 2428s] g++                     '-Wl,-rpath,/usr/lib/virtualbox' 
-Wl,-z,noexecstack,-z,relro -Wl,--as-needed -m32   -o
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/obj/webtest/webtest
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/obj/webtest/webtest.o
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/obj/webtest/gen/webservice/soapClient.o
   
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/lib/vboxsoap.a
  -lgsoapssl++   -lssl   -lcrypto   -lz  
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/bin/VBoxRT.so
  -lpthread   -lm   -lrt   -ldl   -lssl   -lcrypto 
[ 2431s] kBuild: Installing webtest =>
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/bin/webtest 
[ 2431s] kmk_builtin_install --hard-link-files-when-possible    --
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/obj/webtest/webtest
/home/abuild/rpmbuild/BUILD/VirtualBox-5.0.10/out/linux.x86/release/bin/webtest
[31235s] qemu: terminating on signal 15 from pid 15197


Job seems to be stuck here, killed. (after 28800 seconds of inactivity)
[31235s] ### WATCHDOG MARKER END ###
[31235s] No buildstatus set, either the base system is broken
(kernel/initrd/udev/glibc/bash/perl)
[31235s] or the build host has a kernel or hardware problem...

The 64-bit version builds OK in OBS. Both versions build OK in my local system.

As a workaround, I have disabled the 32-bit build; however, a fix for the
problem is desired.