>>> rt-tests 2.3 Downloading
wget --passive-ftp -nd -t 3 --no-check-certificate -O '/home/peko/autobuild/instance-0/output-1/build/.rt-tests-2.3.tar.xz.kQjQpf/output' 'https://cdn.kernel.org/pub/linux/utils/rt-tests/rt-tests-2.3.tar.xz' 
--2021-12-30 01:13:24--  https://cdn.kernel.org/pub/linux/utils/rt-tests/rt-tests-2.3.tar.xz
Resolving cdn.kernel.org (cdn.kernel.org)... 151.101.53.176, 2a04:4e42:d::432
Connecting to cdn.kernel.org (cdn.kernel.org)|151.101.53.176|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 115000 (112K) [application/x-xz]
Saving to: '/home/peko/autobuild/instance-0/output-1/build/.rt-tests-2.3.tar.xz.kQjQpf/output'

     0K .......... .......... .......... .......... .......... 44% 6.82M 0s
    50K .......... .......... .......... .......... .......... 89% 7.05M 0s
   100K .......... ..                                         100% 74.0M=0.01s

2021-12-30 01:13:24 (7.70 MB/s) - '/home/peko/autobuild/instance-0/output-1/build/.rt-tests-2.3.tar.xz.kQjQpf/output' saved [115000/115000]

rt-tests-2.3.tar.xz: OK (sha256: b5e7959bcb5c703b2743030751af975ea4e04962e29fc1118f4b605987585735)
>>> rt-tests 2.3 Extracting
xzcat /home/peko/autobuild/instance-0/dl/rt-tests/rt-tests-2.3.tar.xz | tar --strip-components=1 -C /home/peko/autobuild/instance-0/output-1/build/rt-tests-2.3   -xf -
>>> rt-tests 2.3 Patching

Applying 0001-Fix-a-build-issue-with-uClibc-ng.patch using patch: 
patching file src/cyclictest/cyclictest.c
Hunk #1 succeeded at 53 with fuzz 1 (offset -5 lines).

Applying 0002-Makefile-drop-explicit-undefine-PYLIB-for-compatibil.patch using patch: 
patching file Makefile
>>> rt-tests 2.3 Configuring
>>> rt-tests 2.3 Building
PATH="/home/peko/autobuild/instance-0/output-1/host/bin:/home/peko/autobuild/instance-0/output-1/host/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games" /usr/bin/make -j4 -C /home/peko/autobuild/instance-0/output-1/build/rt-tests-2.3 CC="/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc" CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2" prefix=/usr
make[1]: Entering directory '/home/peko/autobuild/instance-0/output-1/build/rt-tests-2.3'
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/cyclictest/cyclictest.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/cyclictest.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/lib/rt-error.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/rt-error.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/lib/rt-get_cpu.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/rt-get_cpu.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/lib/rt-sched.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/rt-sched.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/lib/rt-utils.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/rt-utils.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/lib/rt-numa.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/rt-numa.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/hackbench/hackbench.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/hackbench.o
src/lib/rt-utils.c: In function 'tracemark':
src/lib/rt-utils.c:476:2: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
  write(tracemark_fd, tracebuf, len);
  ^
src/lib/rt-utils.c:479:2: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
  write(trace_fd, "0\n", 2);
  ^
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/pi_tests/pip_stress.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/pip_stress.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/pi_tests/pi_stress.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/pi_stress.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/pmqtest/pmqtest.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/pmqtest.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/ptsematest/ptsematest.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/ptsematest.o
src/pmqtest/pmqtest.c: In function 'pmqthread':
src/pmqtest/pmqtest.c:192:6: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
      write(tracing_enabled, "0", 1);
      ^
src/ptsematest/ptsematest.c: In function 'semathread':
src/ptsematest/ptsematest.c:115:6: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
      write(tracing_enabled, "0", 1);
      ^
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/rt-migrate-test/rt-migrate-test.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/rt-migrate-test.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/signaltest/signaltest.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/signaltest.o
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/sigwaittest/sigwaittest.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/sigwaittest.o
src/rt-migrate-test/rt-migrate-test.c: In function 'ftrace_write':
src/rt-migrate-test/rt-migrate-test.c:72:2: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
  write(mark_fd, buff, n);
  ^
src/sigwaittest/sigwaittest.c: In function 'semathread':
src/sigwaittest/sigwaittest.c:185:6: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
      write(tracing_enabled, "0", 1);
      ^
src/sigwaittest/sigwaittest.c: In function 'main':
src/sigwaittest/sigwaittest.c:506:3: warning: ignoring return value of 'ftruncate', declared with attribute warn_unused_result [-Wunused-result]
   ftruncate(shmem, totalsize);
   ^
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/svsematest/svsematest.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/svsematest.o
src/svsematest/svsematest.c: In function 'semathread':
src/svsematest/svsematest.c:178:6: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
      write(tracing_enabled, "0", 1);
      ^
src/svsematest/svsematest.c: In function 'main':
src/svsematest/svsematest.c:547:3: warning: ignoring return value of 'ftruncate', declared with attribute warn_unused_result [-Wunused-result]
   ftruncate(shmem, totalsize);
   ^
/home/peko/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc -D VERSION=2.3 -c src/sched_deadline/cyclicdeadline.c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -Isrc/include -o bld/cyclicdeadline.o
src/sched_deadline/cyclicdeadline.c: In function 'cgroup_mounted':
src/sched_deadline/cyclicdeadline.c:381:29: error: 'CGROUP2_SUPER_MAGIC' undeclared (first use in this function)
  ret = mounted(CGROUP_PATH, CGROUP2_SUPER_MAGIC);
                             ^
src/sched_deadline/cyclicdeadline.c:381:29: note: each undeclared identifier is reported only once for each function it appears in
src/sched_deadline/cyclicdeadline.c: In function 'ftrace_write':
src/sched_deadline/cyclicdeadline.c:210:2: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
  write(mark_fd, buf, n);
  ^
src/sched_deadline/cyclicdeadline.c: In function 'main':
src/sched_deadline/cyclicdeadline.c:1276:3: warning: ignoring return value of 'system', declared with attribute warn_unused_result [-Wunused-result]
   system("cat /sys/fs/cgroup/cpuset/my_cpuset/tasks");
   ^
src/sched_deadline/cyclicdeadline.c: In function 'teardown':
src/sched_deadline/cyclicdeadline.c:658:3: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
   write(fd, "0", 2);
   ^
src/sched_deadline/cyclicdeadline.c:664:3: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
   write(fd, "1", 2);
   ^
src/sched_deadline/cyclicdeadline.c: In function 'destroy_cpuset':
src/sched_deadline/cyclicdeadline.c:630:3: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
   write(fd, buf, strlen(buf));
   ^
make[1]: *** [Makefile:101: bld/cyclicdeadline.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/peko/autobuild/instance-0/output-1/build/rt-tests-2.3'
make: *** [package/pkg-generic.mk:295: /home/peko/autobuild/instance-0/output-1/build/rt-tests-2.3/.stamp_built] Error 2
make: Leaving directory '/home/peko/autobuild/instance-0/buildroot'