file ownership
There seems to be something wrong with ownership of the resulting files. As you can see the checksum file of the 64bit-ISO is owned by root while all others are owned by user.
-rw-r--r-- 1 bernhard users 974127104 08.07.2015 16:42 manjaro-i3-openrc-0.9.0dev-i686.iso -rw-r--r-- 1 bernhard users 70 08.07.2015 16:43 manjaro-i3-openrc-0.9.0dev-i686.iso.md5 -rw-r--r-- 1 bernhard users 14871 08.07.2015 16:22 manjaro-i3-openrc-0.9.0dev-i686-pkgs.txt -rw-r--r-- 1 bernhard users 1117487104 08.07.2015 17:24 manjaro-i3-openrc-0.9.0dev-x86_64.iso -rw-r--r-- 1 root root 72 08.07.2015 17:24 manjaro-i3-openrc-0.9.0dev-x86_64.iso.md5 -rw-r--r-- 1 bernhard users 16145 08.07.2015 17:02 manjaro-i3-openrc-0.9.0dev-x86_64-pkgs.txt