Documentation fails to build on doc.rs

[YuhanLiin]

The docs don't build on doc.rs due to this error

[cr1901]

"--target" "x86_64-unknown-linux-gnu" is being passed, so the docs will naturally fail to compile. I guess I don't understand why this ever worked at all until now...

[cr1901]

Fixing this is pending on rust-lang/docs.rs#1683.

[RossPorter506]

Hi @cr1901, are we still blocked on this?

[cr1901]

@RossPorter506 Probably not blocked, but as I've not had anything to release since then, there's been no opportunity to rebuild the docs. Maybe I can poke someone on docs team to rebuild it...