gitian build fails due to "failed to run on-target setarch i386 bash -x < var/build-script > var/build.log 2>&1 (RuntimeError)"

make with 7c759425b65eb7a2e7b42564d65f3cd784cc9ab5 fails due to

./bin/gbuild:21:in `system!': failed to run on-target setarch i386 bash -x < var/build-script > var/build.log 2>&1 (RuntimeError)
	from ./bin/gbuild:122:in `build_one_configuration'
	from ./bin/gbuild:224:in `block (2 levels) in <main>'
	from ./bin/gbuild:219:in `each'
	from ./bin/gbuild:219:in `block in <main>'
	from ./bin/gbuild:217:in `each'
	from ./bin/gbuild:217:in `<main>'
make: *** [build] Error 1

See the attached build log for more details

Trac:
Username: krichter