Bad error message for "relative paths are not supported in visibilities" error

[asquared31415]

Given the following code:

mod a {
  pub(in a) fn foo() {}
}

fn main() {}

When compiled using Edition 2018 or 2021

error: relative paths are not supported in visibilities on 2018 edition
 --> src/main.rs:2:10
  |
2 |   pub(in a) fn foo() {}
  |          ^ help: try: `crate::a`

error: aborting due to previous error

This error message is misleading and should likely be changed to "only supported in 2015 edition" or "not supported in 2018 edition or later"

error: relative paths are not supported in visibilities in 2018 edition or later
 --> src/main.rs:2:10
  |
2 |   pub(in a) fn foo() {}
  |          ^ help: try: `crate::a`

error: aborting due to previous error