Wrong diagnostic: `main` function not found in crate

[oriongonza]

Tested on nightly and stable.

;
fn main() { }

error: expected item, found `;`
 --> src/main.rs:1:1
  |
1 | ;
  | ^ help: remove this semicolon

error[E0601]: `main` function not found in crate `tests`
 --> src/main.rs:1:2
  |
1 | ;
  |  ^ consider adding a `main` function to `src/main.rs`

For more information about this error, try `rustc --explain E0601`.
error: could not compile `tests` (bin "tests") due to 2 previous errors

The second diagnostic is strange.

[oriongonza]

@rustbot label +A-diagnostics S-has-mvce

[gurry]

@rustbot claim

[oriongonza]

@saethlin any idea why rustbot ignored me?

[saethlin]

Just guessing, the missing + for S-has-mcve maybe?