make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-x86_64_musl/pingcheck-2022-03-01'
  DIR     build
  CC      main.c
  CC      icmp.c
  CC      ping.c
  CC      util.c
  CC      ubus.c
  CC      uci.c
  CC      scripts.c
  CC      tcp.c
  CC      log.c
  LD      build/pingcheck
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-x86_64_musl/pingcheck-2022-03-01'
rstrip.sh: /builder/shared-workdir/build/sdk/build_dir/target-x86_64_musl/pingcheck-2022-03-01/ipkg-x86_64/pingcheck/usr/sbin/pingcheck: executable
ERROR: info field 'version' has invalid value: package version is invalid
ERROR: failed to create package: /builder/shared-workdir/build/sdk/bin/packages/x86_64/packages/pingcheck-2022-03-01-r1.apk: package version is invalid
make[3]: *** [Makefile:98: /builder/shared-workdir/build/sdk/bin/packages/x86_64/packages/pingcheck-2022-03-01-r1.apk] Error 99
time: package/feeds/packages/pingcheck/compile#1.30#0.70#3.81