PATH='/usr/local/bin:/opt/bin:/bin:/usr/bin' PATHOSX='/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Library/Apple/usr/bin' /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ @build/ninja/mongo/db/s/config/sharding_catalog_manager_chunk_operations.o.rsp
src/mongo/db/s/config/sharding_catalog_manager_chunk_operations.cpp:514:21: error: loop variable 'shard' of type 'const mongo::BSONElement' creates a copy from type 'const mongo::BSONElement' [-Werror,-Wrange-loop-analysis]
    for (const auto shard : valuesElem.Array()) {
                    ^
src/mongo/db/s/config/sharding_catalog_manager_chunk_operations.cpp:514:10: note: use reference type 'const mongo::BSONElement &' to prevent copying
    for (const auto shard : valuesElem.Array()) {
         ^~~~~~~~~~~~~~~~~~
                    &