doc.rust-lang.org - old versions of the documentation appear in Google

[kornelski]

Currently for the search: https://www.google.co.uk/search?q=rust+duration the first result links to docs from 1.6.0 where this feature was incomplete and unstable.

https://doc.rust-lang.org/robots.txt already excludes docs for pre-1.0 versions. Perhaps old post-1.0 version can be excluded too?

[GuillaumeGomez]

cc @steveklabnik

[steveklabnik]

I know nothing about how our robots.txt is managed.

rust-lang/rfcs#1826 is related, as this will show a banner

[steveklabnik]

Closing this in favor of that RFC.