In file included from /usr/ports/misc/xgboost/work/xgboost-2.1.0/tests/cpp/collective/test_allgather.cc:20:
/usr/ports/misc/xgboost/work/xgboost-2.1.0/tests/cpp/collective/test_worker.h:108:21: error: no viable overloaded '='
  108 |   config["timeout"] = timeout.count();
      |   ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~
/usr/ports/misc/xgboost/work/xgboost-2.1.0/include/xgboost/json.h:403:9: note: candidate function not viable: no known conversion from 'rep' (aka 'long long') to 'JsonNumber' for 1st argument
  403 |   Json& operator=(JsonNumber number) {
      |         ^         ~~~~~~~~~~~~~~~~~
/usr/ports/misc/xgboost/work/xgboost-2.1.0/include/xgboost/json.h:409:9: note: candidate function not viable: no known conversion from 'rep' (aka 'long long') to 'JsonInteger' for 1st argument
  409 |   Json& operator=(JsonInteger integer) {
      |         ^         ~~~~~~~~~~~~~~~~~~~
/usr/ports/misc/xgboost/work/xgboost-2.1.0/include/xgboost/json.h:415:9: note: candidate function not viable: no known conversion from 'rep' (aka 'long long') to 'JsonArray' for 1st argument
  415 |   Json& operator=(JsonArray&& array) {
      |         ^         ~~~~~~~~~~~~~~~~~
/usr/ports/misc/xgboost/work/xgboost-2.1.0/include/xgboost/json.h:424:9: note: candidate template ignored: could not match 'JsonTypedArray<T, kind>' against 'rep' (aka 'long long')
  424 |   Json& operator=(JsonTypedArray<T, kind>&& array) {
      |         ^