Double lock

May result in immediate deadlock. Attempt to acquire a non-recursive lock that is already held
/data/mci/cc8eddc55985d182e6e6a30c4cdae2b6/bazel_cache/8ae4f993bef1c7adf43d454bd49b17a1/execroot/_main/src/mongo/db/s/transaction_coordinator_service.cpp:325: LOCK 166478 "unique_lock" locks "this->_mutex". [Note: The source code implementation of the function has been overridden by a builtin model.]
/data/mci/cc8eddc55985d182e6e6a30c4cdae2b6/bazel_cache/8ae4f993bef1c7adf43d454bd49b17a1/execroot/_main/src/mongo/db/s/transaction_coordinator_service.cpp:325: LOCK 166478 "ul" and "this->_mutex" point to the same lock. [Note: The source code implementation of the function has been overridden by a builtin model.]