Use of auto that causes a copy
Unnecessary object copies can affect performance. Using the auto keyword without an & causes a copy.
/data/mci/22bd5cb6273c9c571686198c9f6023af/bazel_cache/3d8c86e2cd3c28a487a62d019e05fed8/execroot/_main/src/mongo/db/s/resharding/resharding_oplog_fetcher.cpp:627: AUTO_CAUSES_COPY 174862 This lambda has an unspecified return type. This implies "auto" and causes the copy of an object of type "mongo::ReshardingDonorOplogId".
/data/mci/22bd5cb6273c9c571686198c9f6023af/bazel_cache/3d8c86e2cd3c28a487a62d019e05fed8/execroot/_main/src/mongo/db/s/resharding/resharding_oplog_fetcher.cpp:627: AUTO_CAUSES_COPY 174862 This return statement creates a copy.