Your package hercules failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6982905 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 905224 [details] build.log
Created attachment 905225 [details] root.log
Created attachment 905226 [details] state.log
Created attachment 934734 [details] preprocessed file this is actually a gcc 4.9.1 problem (on i686) in functions {s370,s390,zarch}_set_jump_pointers(), setting __attribute__((optimize (0))) to any of them makes the problem go away [dan@localhost .libs]$ /usr/libexec/gcc/i686-redhat-linux/4.9.1/cc1 -quiet -O2 -g -Wall -Werror=format-security -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -fPIC cpu.i; as -o cpu.{o,s}; nm -u cpu.o | grep L; tail -n 3 cpu.s cpu.c: In function ‘cpu_thread’: cpu.c:1220:10: warning: ignoring return value of ‘setresuid’, declared with attribute warn_unused_result [-Wunused-result] cpu.c:1228:10: warning: ignoring return value of ‘setresuid’, declared with attribute warn_unused_result [-Wunused-result] U _GLOBAL_OFFSET_TABLE_ U .L1887 U .L1888 U .L1889 U .L1890 U .L2033 U .L2034 U .L2035 U .L2036 U .L2037 U .L2038 U .L2178 U .L2179 U .L2180 U .L2181 U .L2182 U .L2183 .hidden __stack_chk_fail_local .ident "GCC: (GNU) 4.9.1 20140813 (Red Hat 4.9.1-7)" .section .note.GNU-stack,"",@progbits
Filed as PR63186 upstream. Whether this is the same thing as s390x libmono issue or not to be determined when this bug is fixed.
gcc-4.9.1-11.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/gcc-4.9.1-11.fc21
Package gcc-4.9.1-11.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing gcc-4.9.1-11.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-11975/gcc-4.9.1-11.fc21 then log in and leave karma (feedback).
gcc-4.9.1-11.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.