"unused import" could be more helpful ("nothing to export")

Code

mod misc {
    const WOW: usize = 1;
}

pub use misc::*;

Current output

warning: unused import: `misc::*`
 --> src/main.rs:6:9
  |
6 | pub use misc::*;
  |         ^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: `playground` (bin "playground") generated 1 warning (run `cargo clippy --fix --bin "playground"` to apply 1 suggestion)

Desired output

Either an additional hint saying why this lint is complaining "There is nothing to export"

Or a new lint or something.

Rationale and extra context

In more complex codebases it's not immediately obvious what the problem is. I'd prefer a message like "nothing to export".

Other cases

No response

Rust Version

rustc 1.75.0 (82e1608df 2023-12-21)
binary: rustc
commit-hash: 82e1608dfa6e0b5569232559e3d385fea5a93112
commit-date: 2023-12-21
host: aarch64-apple-darwin
release: 1.75.0
LLVM version: 17.0.6

Anything else?

No response

Reproduce the warning from the provided snippet in src/main.rs using the reported Rust version, then trace the compiler diagnostic for the unused pub use. The work is complete when this case explains that there is nothing to export, with regression coverage confirming the updated diagnostic.