>>> rt-tests 1.10 Downloading
--2021-01-29 05:46:57--  https://cdn.kernel.org/pub/linux/utils/rt-tests/rt-tests-1.10.tar.xz
Resolving cdn.kernel.org (cdn.kernel.org)... 2a04:4e42:9::432, 151.101.37.176
Connecting to cdn.kernel.org (cdn.kernel.org)|2a04:4e42:9::432|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 112300 (110K) [application/x-xz]
Saving to: '/home/buildroot/autobuild/run/instance-2/output-1/build/.rt-tests-1.10.tar.xz.PobjxD/output'

     0K .......... .......... .......... .......... .......... 45% 7.51M 0s
    50K .......... .......... .......... .......... .......... 91% 19.5M 0s
   100K .........                                             100% 69.9M=0.009s

2021-01-29 05:47:02 (11.7 MB/s) - '/home/buildroot/autobuild/run/instance-2/output-1/build/.rt-tests-1.10.tar.xz.PobjxD/output' saved [112300/112300]

rt-tests-1.10.tar.xz: OK (sha256: 3740ad97b164a1cd77d9ee32bba23a4a0b2495a76468bcf40ff60b55c2a3a709)
>>> rt-tests 1.10 Extracting
mkdir -p /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host
mkdir -p /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/target
xzcat /home/buildroot/autobuild/run/instance-2/dl/rt-tests/rt-tests-1.10.tar.xz | tar --strip-components=1 -C /home/buildroot/autobuild/run/instance-2/output-1/build/rt-tests-1.10   -xf -
>>> rt-tests 1.10 Patching

Applying 0001-Fix-a-build-issue-with-uClibc-ng.patch using patch: 
patching file src/cyclictest/cyclictest.c
Hunk #1 succeeded at 52 with fuzz 1 (offset -6 lines).
>>> rt-tests 1.10 Configuring
mkdir -p /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/host-skeleton/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/host-skeleton/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/numactl/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/numactl/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/skeleton/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/skeleton/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/toolchain/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/toolchain/host/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host
mkdir -p /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/target
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/host-skeleton/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/host-skeleton/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/target
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/numactl/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/numactl/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/target
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/skeleton/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/skeleton/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/target
rsync -a --link-dest=/home/buildroot/autobuild/run/instance-2/output-1/per-package/toolchain/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/toolchain/target/ /home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/target
>>> rt-tests 1.10 Building
PATH="/home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host/bin:/home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games" /usr/bin/make -j4 -C /home/buildroot/autobuild/run/instance-2/output-1/build/rt-tests-1.10 CC="/home/buildroot/autobuild/run/instance-2/output-1/per-package/rt-tests/host/bin/aarch64-linux-gcc" CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g2 -D_FORTIFY_SOURCE=2" prefix=/usr
make[1]: python3: Command not found
make[1]: Entering directory `/home/buildroot/autobuild/run/instance-2/output-1/build/rt-tests-1.10'
Makefile:41: *** commands commence before first target.  Stop.
make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-2/output-1/build/rt-tests-1.10'
make: *** [/home/buildroot/autobuild/run/instance-2/output-1/build/rt-tests-1.10/.stamp_built] Error 2
make: Leaving directory `/home/buildroot/autobuild/run/instance-2/buildroot'