Misleading error for missing comma/semicolon in array literal

[LyricLy]

Given the following code: Playground

fn main() {
    let v = [1
    2];
}

The current output is:

error: expected `;`, found `2`
 --> test.rs:2:15
  |
2 |     let v = [1
  |               ^ help: add `;` here
3 |     2];
  |     - unexpected token

error: expected one of `.`, `;`, `?`, `}`, or an operator, found `]`
 --> test.rs:3:6
  |
3 |     2];
  |      ^ expected one of `.`, `;`, `?`, `}`, or an operator

error: aborting due to 2 previous errors

Ideally the output should look like:

error: expected one of `,`, `.`, `;`, `?`, `]`, or an operator, found `2`
 --> test.rs:3:5
  |
2 |     let v = [1
  |               -
  |               |
  |               expected one of `,`, `.`, `;`, `?`, `]`, or an operator
3 |     2];
  |     ^ unexpected token

The error implies that ; is the only valid token at the end of the second line, and that the third line is being considered a separate statement from the second line, probably due to a consequence of the fault-tolerant parsing machinery.

Reasonable output is given when the newline is removed or there is more than 2 elements:

error: expected one of `,`, `.`, `;`, `?`, `]`, or an operator, found `2`
 --> test.rs:2:16
  |
2 |     let v = [1 2
  |                ^ expected one of `,`, `.`, `;`, `?`, `]`, or an operator

error: aborting due to previous error

error: expected one of `,`, `.`, `?`, `]`, or an operator, found `3`
 --> test.rs:3:5
  |
2 |     let v = [1, 2
  |                  -
  |                  |
  |                  expected one of `,`, `.`, `?`, `]`, or an operator
  |                  help: missing `,`
3 |     3];
  |     ^ unexpected token

error: aborting due to previous error

This should be fixed because it is confusing in less clear situations such as the following, especially where someone might expect the comma to be implicit due to the behaviour of match.

let v = [
    {
        1
    }
    {
        2
    }
];

This happens in every edition and on both stable and nightly.