error[E0277]: the trait bound `jsonrpc_core::io::MetaIoHandler<_, _>: std::convert::From<jsonrpc_core::IoHandler>` is not satisfied
  --> src/main.rs:13:17
   |
13 |      let server = ServerBuilder::new(io)
   |                   ^^^^^^^^^^^^^^^^^^ the trait `std::convert::From<jsonrpc_core::IoHandler>` is not implemented for `jsonrpc_core::io::MetaIoHandler<_, _>`
   |
   = help: the following implementations were found:
   = help:   <jsonrpc_core::io::MetaIoHandler<()> as std::convert::From<jsonrpc_core::io::IoHandler>>
   = note: required because of the requirements on the impl of `std::convert::Into<jsonrpc_core::io::MetaIoHandler<_, _>>` for `jsonrpc_core::IoHandler`
   = note: required by `<jsonrpc_http_server::ServerBuilder<M, S>>::new`

error: aborting due to previous error

error: Could not compile `httpjsonrpc`.