When enabling building of the minimal jvm for the Jib profile linux-x86, the change also applied to the open only profile for that platform. The minimal jvm is currently not compiling in that configuration:

In file included from /opt/jprt/T/P1/135924.erik/s/hotspot/src/share/vm/classfile/classLoader.cpp:29:0:
/opt/jprt/T/P1/135924.erik/s/hotspot/src/share/vm/classfile/classLoaderExt.hpp: In member function 'instanceKlassHandle ClassLoaderExt::Context::record_result(Symbol*, ClassPathEntry*, s2, instanceKlassHandle, Thread*)':
/opt/jprt/T/P1/135924.erik/s/hotspot/src/share/vm/classfile/classLoaderExt.hpp:58:33: error: 'classloader_type' is not a member of 'ClassLoader'
           s2 classloader_type = ClassLoader::classloader_type(
                                 ^
make[4]: *** [/opt/jprt/T/P1/135924.erik/s/build/linux-x86-open/hotspot/variant-minimal/libjvm/objs/classLoader.o] Error 1
make[3]: *** [variant-minimal-libs] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [hotspot] Error 1

I don't know if it's supposed to be compiling or not, but our internal reason for building this platform is for the reference implementation build and I doubt we need to build minimal for that. The short term fix should then be to disable building of minimal in this profile.