Unexpected token '<', "<!DOCTYPE "... is not valid JSON

[misha-antonenko]

Unexpected token '<', "<!DOCTYPE "... is not valid JSON

is what trying to build a piece of code reports on https://play.rust-lang.org/?version=nightly&mode=release&edition=2021

I cannot share the playground (if this is specific to that at all), because the 'share' section keeps loading indefinitely

Reproduces on the trivial code:

fn main() {
    let x = 1;
    println!("{}", x);
}

Might have something to do with #666

[dcabanis]

I am getting the same error on Windows and Linux. With Chrome and Edge.
With firefox I am getting:

JSON.parse: unexpected character at line 1 column 1 of the JSON data

[JasonkayZK]

Same issue here, seems that the playground has downed. 😢

[shepmaster]

Issues from this morning are from #1028. Earlier is some other manifestation of #831 or #955

[rmccampbell]

I saw the same error today (though it was fixed shortly), maybe there needs to be some validation in whatever XHR request is returning this HTML which is presumably an error page? So it can at least fail gracefully with a more intelligible error message.

[Powerlax]

I saw the same error today with relatively trivial code. Please fix!

[Huyyyyyyyy]

i got same error today