Rust editor doesn't show errors

I have the following rust code in the editor:

fn main() {
    let a = "Foo";
    println!("Hello, world!" + a);
}

However, trying to run this from the IDE I do get:

   Compiling new_rust_project v0.1.0 (/home/jreimann/Development/workspace-rust/new_rust_project)
error: format argument must be a string literal
 --> src/main.rs:3:14
  |
3 |     println!("Hello, world!" + a);
  |              ^^^^^^^^^^^^^^^^^^^
help: you might be missing a string literal to format with
  |
3 |     println!("{}", "Hello, world!" + a);
  |              ^^^^^

error: aborting due to previous error

error: Could not compile `new_rust_project`.

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

Also see:

My expectations would be:

• The editor shows the same errors, at least when I save the file, or after it got compiled
• Locations (file + line number) in the log output can be clicked in, to open the file in the IDE
• I see some error markers in the project explorer

[ctron]

@ctron Does this still happen with the 2019-06 RC2 candidate?

I just tested this with 2019-06 RC1 and it works now! Thanks!

Version: 2019-06 RC1 (4.12.0RC1)
Build id: 20190606-1049

Now I can see my code is full of issues 😁

[pixilcode]

I was having this same problem. The RLS didn’t seem to be working, but it worked when I would start it from the terminal. However, after looking at this comment, I ran cargo clean on each of the projects. After that, I started Eclipse from the UI Desktop and when it started up, the RLS worked as usual.

Try running cargo clean on all of your projects.