$ BUILD_IN_DOCKER=1 make -C tests/periph_rtc all test BOARD=native --no-print-directory 
Launching build container using image "riot/riotbuild:latest".
docker run --rm --tty --user $(id -u) -v '/usr/share/zoneinfo/Europe/Paris:/etc/localtime:ro' -v '/work/riot/RIOT:/data/riotbuild/riotbase:delegated' -e 'RIOTBASE=/data/riotbuild/riotbase' -e 'CCACHE_BASEDIR=/data/riotbuild/riotbase' -e 'BUILD_DIR=/data/riotbuild/riotbase/build' -e 'RIOTPROJECT=/data/riotbuild/riotbase' -e 'RIOTCPU=/data/riotbuild/riotbase/cpu' -e 'RIOTBOARD=/data/riotbuild/riotbase/boards' -e 'RIOTMAKE=/data/riotbuild/riotbase/makefiles'      -e 'BOARD=native'  -w '/data/riotbuild/riotbase/tests/periph_rtc/' 'riot/riotbuild:latest' make 'BOARD=native'    all
Building application "tests_periph_rtc" for "native" with MCU "native".

"make" -C /data/riotbuild/riotbase/boards/native
"make" -C /data/riotbuild/riotbase/boards/native/drivers
"make" -C /data/riotbuild/riotbase/core
"make" -C /data/riotbuild/riotbase/cpu/native
"make" -C /data/riotbuild/riotbase/cpu/native/periph
"make" -C /data/riotbuild/riotbase/cpu/native/stdio_native
"make" -C /data/riotbuild/riotbase/drivers
"make" -C /data/riotbuild/riotbase/drivers/periph_common
"make" -C /data/riotbuild/riotbase/sys
"make" -C /data/riotbuild/riotbase/sys/auto_init
"make" -C /data/riotbuild/riotbase/sys/div
"make" -C /data/riotbuild/riotbase/sys/frac
"make" -C /data/riotbuild/riotbase/sys/test_utils/interactive_sync
"make" -C /data/riotbuild/riotbase/sys/xtimer
"make" -C /data/riotbuild/riotbase/sys/ztimer
   text	   data	    bss	    dec	    hex	filename
  43191	    736	  47976	  91903	  166ff	/data/riotbuild/riotbase/tests/periph_rtc/bin/native/tests_periph_rtc.elf
r
/work/riot/RIOT/tests/periph_rtc/bin/native/tests_periph_rtc.elf /dev/ttyACM0 
RIOT native interrupts/signals initialized.
LED_RED_OFF
LED_GREEN_ON
RIOT native board initialized.
RIOT native hardware initialization complete.

Help: Press s to start test, r to print it is ready
READY
s
START
main(): This is RIOT! (Version: 2022.01-devel-344-g940f7-pr/cpu/native_rtc_ztimer)

RIOT RTC low-level driver test
This test will display 'Alarm!' every 2 seconds for 4 times
Native RTC initialized.
  Setting clock to   2020-02-28 23:59:57
Clock value is now   2020-02-28 23:59:57
  Setting alarm to   2020-02-28 23:59:59
   Alarm is set to   2020-02-28 23:59:59
  Alarm cleared at   2020-02-28 23:59:57
       No alarm at   2020-02-28 23:59:59
  Setting alarm to   2020-02-28 23:59:61

Alarm!
Alarm!
Alarm!
Alarm!