Can' t compile at rustc 1.24.0-nightly (7eb64b86c 2017-12-20)

[kubo39]

My environments

$ rustup run nightly rustc --version
rustc 1.24.0-nightly (7eb64b86c 2017-12-20)
$ uname -rvm
4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:24:03 UTC 2017 x86_64
$ lsb_release -sd
Ubuntu 16.04.3 LTS

Actual Output

$ rustup run nightly cargo build
   Compiling modbus_server v0.1.0 (file:///home/kubo39/dev/rust/modbus/tokio-modbus)
warning: unused imports: `BoxFuture`, `Sink`
  --> src/bin/main.rs:19:31
   |
19 | use futures::{future, Future, BoxFuture,Stream,Sink};
   |                               ^^^^^^^^^        ^^^^
   |
   = note: #[warn(unused_imports)] on by default
warning: unused import: `std::thread`
  --> src/bin/main.rs:20:5
   |
20 | use std::thread;
   |     ^^^^^^^^^^^

warning: unused import: `std::sync::mpsc::channel`
  --> src/bin/main.rs:21:5
   |
21 | use std::sync::mpsc::channel;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused imports: `ErrorKind`, `Read`, `Write`
  --> src/bin/main.rs:23:21
   |
23 | use std::io::{self, ErrorKind, Write,Read};
   |                     ^^^^^^^^^  ^^^^^ ^^^^

warning: use of deprecated item 'futures::BoxFuture': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
  --> src/bin/main.rs:19:5
   |
19 | use futures::{future, Future, BoxFuture,Stream,Sink};
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: #[warn(deprecated)] on by default

error[E0599]: no method named `decode` found for type `docopt::Docopt` in the current scope
  --> src/bin/main.rs:79:25
   |
79 |         .and_then(|d| d.decode())
   |                         ^^^^^^

error: aborting due to previous error

error: Could not compile `modbus_server`.

To learn more, run the command again with --verbose.

[flosse]

This looks like a usage of an outdated tokio version. You could either update the code or downgrade the tokio dependency.
You could also use my latest approach. There is just a TCP client implementation but writing a server with it is trivial (just impl the Service trait like it's done for the Client ).

[ocschwar]

Hi, thank you fro reporting. It will be a while before I get this done.

[jacobq]

FYI I am very new to rust and trying to use this package. I ran into the same problem. I am working off the default branch (commit 4999aaf)

$ ~/.cargo/bin/cargo version
cargo 1.53.0-nightly (0ed318d18 2021-04-23)

Snippet of the output of ~/.cargo/bin/cargo build --verbose # showing error

error[E0599]: no method named `decode` found for struct `Docopt` in the current scope
  --> src\bin\main.rs:79:25
   |
79 |         .and_then(|d| d.decode())
   |                         ^^^^^^ method not found in `Docopt`

warning: unused import: `Future`
  --> src\bin\main.rs:19:23
   |
19 | use futures::{future, Future, BoxFuture,Stream,Sink};
   |                       ^^^^^^

warning: unused import: `Stream`
  --> src\bin\main.rs:19:41
   |
19 | use futures::{future, Future, BoxFuture,Stream,Sink};
   |                                         ^^^^^^

error: aborting due to previous error; 8 warnings emitted

For more information about this error, try `rustc --explain E0599`.
error: could not compile `modbus_server`

I edited Cargo.toml so that tokio-core = "=0.1.7" (guessing from ages shown on crates.io), but that didn't seem to help (nor did trying other versions). Eventually, I noticed that there was a dependency related to the error message: docopt = "*", so instead I changed that to docopt = "0.7" and then was able to build without error.