here
BUILDSTDERR:  struct iovec
BUILDSTDERR:         ^~~~~
[ 50%] Building C object CMakeFiles/tcmu_static.dir/libtcmu-register.c.o
/usr/bin/cc -Dtcmu_static_EXPORTS -I/usr/include/libnl3 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include  -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-tables -fstack-clash-protection -Wall -std=c99 -fPIC   -o CMakeFiles/tcmu_static.dir/libtcmu-register.c.o   -c /builddir/build/BUILD/tcmu-runner-1.1.3/libtcmu-register.c
[ 53%] Linking C shared library handler_file_async.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/handler_file_async.dir/link.txt --verbose=1
/usr/bin/cc -fPIC -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-tables -fstack-clash-protection -Wall -std=c99 -Wl,-z,relro  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -shared -Wl,-soname,handler_file_async.so -o handler_file_async.so CMakeFiles/handler_file_async.dir/file_example.c.o -lpthread 
make[2]: Leaving directory '/builddir/build/BUILD/tcmu-runner-1.1.3'
[ 53%] Built target handler_file_async
[ 57%] Building C object CMakeFiles/tcmu_static.dir/tcmuhandler-generated.c.o
/usr/bin/cc -Dtcmu_static_EXPORTS -I/usr/include/libnl3 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include  -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -fasynchronous-unwind-tables -fstack-clash-protection -Wall -std=c99 -fPIC   -o CMakeFiles/tcmu_static.dir/tcmuhandler-generated.c.o   -c /builddir/build/BUILD/tcmu-runner-1.1.3/tcmuhandler-generated.c
BUILDSTDERR: make[2]: *** [CMakeFiles/tcmu.dir/build.make:86: CMakeFiles/tcmu.dir/libtcmu.c.o] Error 1
make[2]: Leaving directory '/builddir/build/BUILD/tcmu-runner-1.1.3'
BUILDSTDERR: make[1]: *** [CMakeFiles/Makefile2:182: CMakeFiles/tcmu.dir/all] Error 2
BUILDSTDERR: make[1]: *** Waiting for unfinished jobs....
BUILDSTDERR: make[2]: *** [CMakeFiles/tcmu_static.dir/build.make:86: CMakeFiles/tcmu_static.dir/libtcmu.c.o] Error 1
BUILDSTDERR: make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/builddir/build/BUILD/tcmu-runner-1.1.3'
make[1]: Leaving directory '/builddir/build/BUILD/tcmu-runner-1.1.3'
BUILDSTDERR: make[1]: *** [CMakeFiles/Makefile2:256: CMakeFiles/tcmu_static.dir/all] Error 2
BUILDSTDERR: make: *** [Makefile:133: all] Error 2
BUILDSTDERR: error: Bad exit status from /var/tmp/rpm-tmp.wBwRjv (%build)
RPM build errors:
BUILDSTDERR:     Bad exit status from /var/tmp/rpm-tmp.wBwRjv (%build)
Child return code was: 1
EXCEPTION: [Error()]
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/mockbuild/trace_decorator.py", line 96, in trace
    result = func(*args, **kw)
  File "/usr/lib/python3.6/site-packages/mockbuild/util.py", line 626, in do
    raise exception.Error("Command failed: \n # %s\n%s" % (command, output), child.returncode)
mockbuild.exception.Error: Command failed: 
 # /usr/bin/systemd-nspawn -q -M 9fce9a5f263445d5801291486141bb33 -D /var/lib/mock/f29-build-14068-6391/root -a --setenv=TERM=vt100 --setenv=SHELL=/bin/bash --setenv=HOME=/builddir --setenv=HOSTNAME=mock --setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin --setenv=PROMPT_COMMAND=printf "\033]0;<mock-chroot>\007" --setenv=PS1=<mock-chroot> \s-\v\$  --setenv=LANG=en_US.UTF-8 -u mockbuild bash --login -c /usr/bin/rpmbuild -bb --target riscv64 --nodeps /builddir/build/SPECS/tcmu-runner.spec