Is it possible to enable the gRPC traces while running etcd-client program

[rahulKrishnaM]

The gRPC implementation supports enabling traces as per
https://github.com/grpc/grpc/blob/master/TROUBLESHOOTING.md

# Print info from 3 different tracers, including tracing logs with log level DEBUG
GRPC_VERBOSITY=debug GRPC_TRACE=tcp,http,api ./helloworld_application_using_grpc

However I'm not able to see these traces getting enabled while running the RUST code based on etcd-client. Any pointers for the same, or do we support while running this as a RUST progam ?

[davidli2010]

etcd-client uses tonic, a rust implementation of gRPC, and it depends on tracing.