meet 'deprecated' while compiling

[liketemple]

after add dependency of gen_rpc to elixir project, and employ cmd mix deps.get mix deps.compile, meet this:

compile: warnings being treated as errors /deps/gen_rpc/src/driver/gen_rpc_driver_ssl.erl:68: ssl:ssl_accept/1: deprecated; use ssl:handshake/1 instead ===> Compiling src/driver/gen_rpc_driver_ssl.erl failed src/driver/gen_rpc_driver_ssl.erl:68: ssl:ssl_accept/1: deprecated; use ssl:handshake/1 instead

** (Mix) Could not compile dependency :gen_rpc, "/Users/like/.mix/rebar3 bare compile --paths="/Users/like/elixirworkdir/img_server/_build/dev/lib/*/ebin"" command failed. You can recompile this dependency with "mix deps.compile gen_rpc", update it with "mix deps.update gen_rpc" or clean it with "mix deps.clean gen_rpc"