let_chains isn't stable, stabilization was reverted in https://github.com/rust-lang/rust/pull/100538

[svblsvljb]

let_chains feature stabilization was reverted in rust-lang/rust#100538.

let_chains is still an unstable feature.

[jplatte]

I knew about it, but apparently I failed to update the page. Thanks for letting me know, I've fixed it now.