Trailing commas are not permitted for method calls

[brendanzab]

fn main() {
    x.foo(1, 2,);
}

<anon>:2:16: 2:17 error: unexpected token: `)`
<anon>:2     x.foo(1, 2,);
                        ^

http://is.gd/8OsLJv

[japaric]

Duplicate of #14240?

I think this is being addressed in #16646.

[huonw]

Closed as dupe; thanks @japaric.

[brendanzab]

Ooh nice! Sorry!

Just contributing to our closed issue stats! ^_^